72150
7151
7.152
7.153
7.154
7.155
7.156
7.157
7.158
7.159
7.160
7e151
7.152
7.153
7.184
72165
7.156
7.157
7.158
7.159
7.170
7.171
7.172
7e1l73
7.174
7.175
7.176
7.177
7.178
7.179
7.180
7.181
7.182
7.183
7.184
7.185
7.186
7.187
7.186
7.189
72190
7.191
7.192
7.193
7.194
7.195
72196
7.197
7.198
7.199

[H+]
nEq/L
70.795
70.632
70.470
70.308
70.146
69.985
69.824
69.663
69.503
69.343
69.183
69.024
08.866
68.707
68.549
68.391
68.234
68.077
67.921
57.764
67.609
672453
67.298
67.143
662989
66.835
66.681
66.528
66.375
66.222
66.070
65.918
654766
65.615
652464
65.313
652163
65.013
64.864
64.715
64.566
64.417
64.269
64.121
63.974
63.827
63.680
63.533
63.387
63.2242

pH

7-200
7.201
7.202
7.203
72204
7.205
7.206
7.207
7.208
7.209
7.210
7.211
7.212
72213
7.214
7.215
7.216
7.217
7.218
7.219
7.220
7.221
7.222
7.223
7.224
7.225
7.226
72227
7.228
7.229
7.230
7.231
7.232
7.233
12234
7.235
12236
7.237
7.238
72239
7.240
7.241
7.242
72243
7.244
7.245
7.246
7.247
7.248
72249

18

pH values 7.150 - 7.299

[H+]
nEq/L
63.096
62.951
62.806
62.662
62.518
622374
62.230
62.087
61.944
61.802
61.660
61.518
61.377
61.235
61.095
60.954
60.814
60.674
60.534
60.395
60.256
60.118
59.980
59.842
59.704
59.567
59.430
59.293
59.157
59.021
58.885
58.749
58.614
58.479
58.345
58.211
58.077
57.943
572810
57.677
57.544
572412
57.280
57.148
57.017
56.886
56.755
56.624
56.494
56.364

pH

7.250
7.251
7.252
7.253
7.254
7.255
72256
7.257
7.258
7.259
7.260
7.261
7.262
7.263
72264
7.265
7.266
72267
7.268
72269
7.270
7.271
7.272
7.273
7.274
7.275
7.276
7.277
7.278
7.279
7-280
7.281
7.282
7.283
7.284
7.285
7.286
7.287
7.288
7.289
7-290
7.291
7.292
72293
7.294
7.295
72296
7.297
7.298
7.299

[H+]
nEq/L
56.235
56.105
55.976
55.847
55.719
55.591
55.463
55.335
55.208
55.081
54.955
54.828
54.702
54.576
54.451
54.325
54.201
54.076
53.951
53.827
53.704
53.580
53.457
53.334
53.211
53.089
52.967
52.845
52.723
52.602
52.481
52.360
52.240
52.120
52.000
51.880
51.761
51.642
51.523
51.405
51.287
51.169
51.051
50.934
50.816
50.700
50.583
50.467
50.351
50.235


6.300
6.301
6.302
6.303
52304
6.305
6.306
6.397
6.398
6.309
6.310
$311
$2312
6.313
6.314
60315
$2316
6.317
6.318
6.319
6.320
6.321
6.322
62323
62324
6.325
6.326
6.327
6-328
6.329
6.330
6.331
6 2332
6.333
6.334
6.335
6.336
6.337
6.338
6.339
$2340
60341
6.342
56343
62344
6.345
62346
6.347
6.348
62349

[Ht]
nEq/L
501.19
500.04
498.89
497.74
496.60
495.45
494.32
493.18
492.04
490.91
489.78
488.66
487.53
486.41
485.29
484.18
483.06
481.95
480.84
479.74
478.63
477.53
476.44
475.34
474.25
473.16
472.07
470.98
469.90
468.82
467.74
466.66
465.59
464.52
463.45
462.39
461.32
460.26
459.20
458.15
457.09
456.04
454.99
453.95
452.90
451.86
450.82
449.78
448.75
447.72

pH

6.350
66351
6.352
6.353
62354
6.355
6.356
6.357
6.358
6.359
62360
6.361
6.362
6.363
6.364
60365
6.366
6.367
6.368
6.369
6.370
6.371
6.372
6.373
6.374
6.375
6.376
6.377
6.378
6.379
6.380
6.381
6.382
6.383
6.384
62385
6.386
6.387
6.388
6.389
6.390
6.391
6.392
60393
62394
6.395
62396
6.397
62398
6.399

12

PH values 6.300 - 6.449

[H+]
nEq/L
446.69
445.66
444.64
443.61
442.59
441.58
440.56
439.55
438.54
437.53
436.52
435.52
434.51
433.52
432.52
431.52
430.53
429.54
428.55
427.57
426.58
425.60
424.62
423.65
422.67
421.70
420.73
419.76
418.80
417.84
416.87
415.92
414.96
414.00
413.05
412.10
411.15
410.21
409.27
408.32
407.38
406.45
405.51
404.58
403.65
402.72
401.80
400.87
399.95
399.03

pH

6-400
6.401
62402
62403
62404
62405
62406
60407
6.408
6.409
6.410
6.411
60412
6.413
60414
6.415
6.416
6.417
60418
62419
6.420
6.421
60422
6.423
60424
66425
60426
6.427
62428
62429
62430
66431
6.432
6.433
60434
6.435
6.436
6.437
66438
62439
6.440
6.441
60442
62443
6.444
6.445
66446
60447
6.448
6.449

[H+]
nEq/L
398.11
397.20
396.28
395.37
394.46
393.55
392.65
391.75
390.85
389.95
389.05
388.16
387.26
386.37
385.48
384.60
383.71
382.83
381.95
381.07
380.19
379.32
378.45
377.58
376.71
375.84
374.98
374.12
373.25
372.40
371.54
370.69
369.83
368.98
368.13
367.29
366644
365.60
364-76
363.92
363.08
362.25
361.41
360.58
359.75
358.93
358.10
357.28
356.46
355.64


7.750
7.751
7.752
7.753
T6754
7.755
7.756
7.757
7.758
7.739
72750
7.751
7.752
7.753
72754
7.755
7.766
7.757
7.758
7.759
7.770
7.771
T.772
T2773
7.774
7.775
7.776
7.777
7.778
7.779
7-780
7.781
7.782
7.783
T0784
7.785
7.786
7.787
T2788
7.789
7.790
7.791
7.792
7.793
7.794
7.795
7.796
7.797
7.798
7.799

[H+]
nEq/L
17.783
17.742
17.701
17.661
17.62C
17.580
17.539
17.499
17.459
17.418
17.378
17.338
17.299
17.259
17.219
17.179
i7.140
17.101
17.061
17.022
16.983
16.944
16.905
16.866
16.827
16.788
16.750
16.711
16.673
16.635
16.596
16.558
16.520
16.482
162444
16.406
16.369
16.331
16.293
16.256
16.218
16.181
16.144
16.107
16.070
16.033
15.996
15.959
15.922
15.886

pH

7.800
7.801
7.802
7.803
7.804
7.805
7.806
7.807
7.808
7.809
7.810
7.811
7.812
7.813
7.814
7.815
7.816
7.817
7.818
7.819
7.820
7.821
7.822
7.823
7.824
7.825
7.826
7.827
7.828
7.829
7.830
7.831
7.832
7.833
7.834
7.835
7.836
7.837
7.838
7.839
72840
7.841
7.842
7.843
7.844
7.845
7.846
7.847
7.848
7.849

to
&

pH values 7.750 - 7.899

[H+]
nEq/L
15.849
15.813
15.776
15.740
15.704
15.668
15.632
15.596
15.560
15.524
15.489
15.453
15.417
15.382
15.347
15.311
15.276
15.241
15.206
15.171
15.136
15.101
15.066
15.032
14.997
14.963
14.928
14.894
14.860
14.826
14.791
14.757
14.723
14.690
14.656
14.622
14.589
14.555
14.521
14.488
14.455
14.422
14.388
14.355
14.322
14.289
14.256
14.224
14.191
14.158

pH

7.850
7.851
72852
7.853
72854
7.855
7.856
7.3857
7.858
7.859
7.860
7.861
7.862
7.863
7-864
7.865
7.866
7.867
7.868
7.869
7.870
7.871
7.872
7.873
7.874
7.875
7.876
7.877
7.878
7.879
7.880
7.881
7-882
7.883
7.884
72885
7.886
7.887
7.888
7.889
7.890
7.891
7.892
7.893
7.894
7.895
7.896
7.897
7.898
7.899

[H+]
nEq/L
14.126
14.093
14.061
14.028
13.996
13.964
13.932
13.900
13.868
13.836
13.804
13.772
13.741
13.709
13.678
13.646
13.615
13.583
13.552
13.521
13.490
13.459
13.428
13.397
13.366
13.336
13.305
13.274
13.244
13.213
13.183
13.153
13.122
13.092
13.062
13.032
13.002
12.972
12.942
12.913
12.883
12.853
12.824
12.794
12.765
12.735
12.706
12.677
12.648
12.619


pH

5.000
5.001
5.002
5.003
5.004
5.005
5.006
5.007
5.008
5.009
5.010
5.011
5.012
5.013
5.014
5.015
5.016
5.017
5.018
5.019
5.020
5.021
5.022
5.023
5.024
5.025
5.026
5.027
5.028
5.029
5.030
5.031
5.032
5.033
52034
5.035
5.036
5.037
5.038
5.039
5.040
5.041
52042
5.043
52044
5.045
52046
5.047

5.048.

5.049

[H+]
nEq/L
10000.0
9977.0
9954.1
9931.2
9908.3
9885.5
9862.8
9840.1
9817.5
9794.9
977264
9749.9
9727.5
9705.1
9682.8
9660.5
9638.3
9616.1
9594.0
9571.9
9549.9
9528.0
9506.1
9484.2
9462.4
9440.6
9418.9
9397.2
9375.6
9354.1
9332.6
9311.1
9289.7
9268.3
9247.0
9225.7
9204.5
9183.3
9162.2
9141.1
9120.1
9099.1
9078.2
9057.3
9036.5
9015.7
8995.0
8974.3
8953.7
8933.1

pH

5.050
5.051
5.052
5.053
5.054
5.055
5.056
5.057
5.058
5.059
5.060
5.061
5.062
5.063
5.064
5.065
5.066
5.067
5.068
5.069
5.070
5.071
5.072
5.073
5.074
5.075
5.076
5.077
5.078
5.079
5.080
5.081
5.082
5.083
5.084
5.085
5.086
5.087
5.088
5.089
5.090
5.091
5.092
5.093
5.094
5.095
5.096
5.097
5.098
5.099

pH values 5.000 - 5.149

[H+]
nEq/L
8912.5
8892.0
8871.6
8851.2
8830.8
8810.5
8790.2
8770.C
8749.9
8729.7
8709.7
8689.6
8669.6
8649.7
8629.8
8610.0
8590.2
8570.4
8550-7
8531.0
8511.4
8491.8
8472.3
8452.8
8433.4
8414.0
8394.6
8375.3
8356.0
8336.8
8317.7
8298.5
8279.4
8260.4
8241.4
8222.4
8203.5
8184.7
8165.8
8147.1
8128.3
8109.6
8091.0
8072.4
8053.8
8035.3
8016.8
7998.4
7980.0
7961.6

pH

5.100
5.101
5.102
5.103
5.104
5.105
5.106
5.107
5.108
5.109
5.110
Sell
5.112
5.113
5.114
5.115
5.116
5.117
5.118
5.119
5.120
5.121
5.122
5.123
5.124
5.125
5.126
5.127
5.128
5.129
5.130
5.131
5-132
5.133
5.134
5.135
5.136
5.137
5.138
5.139
5.140
5.141
5.142
5.143
5.144
50145
5.146
5.147
5.148
5.149

[H+]
nEq/L
1943.3
7925.0
7906.8
7888.6
7870.5
7852.4
7834.3
7816.3
7798.3
7780.4
1762.5
7744.6
7726.8
7709.1
7691.3
7673.6
7656.0
1638.4
7620.8
1603.3
7585.8
7568.4
7550.9
1533.6
7516.3
7499.0
7481.7
7464.5
1447.3
7430.2
741301
739601
737961
7362.1
734542
1328.3
7311.4
7294.6
727728
7261.1
724404
7227.7
7211.1
7194.5
7178.0
7161.5
7145.0
7128.6
7112.2
7095.8



pH

7.300
7.301
72302
7.303
7.304
7.305
7.396
7.307
7.308
7.309
7.310
7.311
7.312
7.313
7.314
7.315
7.316
7.317
7.318
7.319
7.320
7.321
7.322
7.323
72324
7.325
7.326
7.327
7.328
7.329
7.330
72331
7.332
7.333
76334
7.335
7.336
7.337
7.338
72339
7.340
72341
72342
72343
76344
72345
72345
72347
7.348
7.349

[H+]
nEq/L
50.119
50.004
49.889
49.774
49.660
49.545
49.432
49.318
49.204
49.091
48.978
48.866
48.753
48.641
48.529
48.418
48.306
48.195
48.084
47.974
47.863
47.753
472644
470534
47.425
47.316
47.207
47.098
46.990
46.882
46.774
46.666
46.559
46.452
46.345
46.239
46.132
462026
45.920
452815
45.709
45.604
45.499
45.395
45.290
45.186
45.082
44.978
44.875
44.772

pH

7.350
7.351
7.352
7.353
7.354
7.355
7.356
7.357
7.358
7.359
7.360
7.361
7.362
7.363
7.364
7.365
7.366
7.367
7.368
7.369
7.370
7.371
7.372
7.373
7.374
7.375
7.376
7.377
7.378
7.379
7.380
7.381
7.382
7.383
7.384
7.385
7.386
7.387
7.388
7.389
7.390
7.391
7.392
72393
72394
7.395
7.396
7.397
7.398
7.399

19

pH values 7.300 — 7449

[He]
nEq/L

44.669
44.566
44.464
44.361
44.259
44.158
44.056
43.955
43.854
43.753
43.652
43.552
43.451
43.352
43.252
43.152
43.053
42.954
42.855
42.757
42.658
42.560
42.2462
42.365
42.267
42.170
42.073
41.976
41.880
41.784
41.687
41.592
41.496
41.400
41.305
41.210
41.115
41.021
40.927
40.832
40.738
40.645
40.551
40.458
40.365
40.272
40.180
40.087
39.995
39.903

pH

72400
7.401
7.402
7.403
72404
7.405
7.406
7.407
72408
7.409
7.410
7.411
7.412
72413
7.414
7.415
72416
7.417
7.418
7.419
72420
7.421
7.422
72423
70424
72425
7.426
7.427
7.428
7.429
72430
7.0431
72432
7.433
72434
7.435
7.436
72437
7-438
72439
72440
7.441
70442
7.443
72444
72445
7.446
7.6447
72448
72449

[H+]
nEq/L
39.811
39.720
39.628
39.537
392446
39.355
39.265
39.175
39.085
38.995
38.905
38.816
38.726
38.637
38.548
38.460
38.371
38.283
38.195
38.107
38.019
37.932
37.845
37.758
37.671
37.584
37.498
37.412
37.325
37.2240
37.154
37-069
36.983
36.898
36.813
36.729
36.644
36.560
36.476
36.392
36.308
36.225
36.141
36.058
35.975
35.893
35.810
35-728
35.646
35.564



pH

8.150
8.151
8.152
8.153
8.154
8.155
8.156
6.157
8.158
8.159
8.150
8.1561
8.152
8.153
8.164
8.155
8.156
8.157
8.158
8.159
8.170
8.171
8.172
8.173
B.1T4
8.175
8.176
8.177
8.178
8.179
8.180
8.161
8.132
8.183
8.184
8.185
8.186
8.187
8.188
8.189
8.190
8.191
B192
8.193
B.194
8.195
8.196
8.197
8.198
8.199

[H+]
nEq/L
7.0796
7.0634
7.0471
7.0309
1.0147
629986
6.9825
6.9664
649504
669344
6.9185
6.9026
528857
6.8709
6.8551
6.8393
6.8236
6.8079
6.7922
647766
6.7610
6.7455
6.7300
607145
626990
626836
6.6683
6.6529
6.6376
626224
6.6071
6.5919
6.5768
6.5617
645466
5.5315
665165
6.5015
664865
664716
624567
644419
664271
624123
6.3976
6.3828
6.3682
6.3535
5.3389
623243

pH

8.200
8.201
8.202
8.203
8.204
8.205
8.206
8.207
8.208
8.209
8.210
8.211
8.212
8.213
8.214
8.215
8.216
8.217
8.218
8.219
8.220
8.221
8.222
8.223
8.224
8.225
8.226
8.227
8.228
8.229
8.230
8.231
8.232
8.233
8.234
8.235
8.236
8.237
8.238
8.239
8.240
8.241
8.242
8.243
8.244
8.245
8.246
8.247
8.248
8.249

w
Se

pH values 8.150— 8.299

(H+]
nEq/L
6.3098
662953
622808
642664
662519
642376
6.2232
6.2089
6.1946
621804
6.1662
641520
6.1378
6.1237
6.1096
6.0956
6.0816
6.0676
6.0536
6.0397
6.0258
6.0120
5.9981
5.9843
5.9706
5.9568
5.9431
5.9295
5.9158
5.9022
5.8887
5.8751
5.8616
5.8481
568347
5.8213
5.8079
5.7945
5.7812
527679
527546
567414
5.7282
5.7150
5.7019
5.6888
5.6757
5.6626
506496
5.6366

pH

8.250
8.251
8.252
8.253
8.254
8.255
8.256
8.257
8.258
8.259
8.260
8.261
8.262
8.263
8.264
8.265
8.266
8.267
8.268
8.269
8.270
8.271
8.272
8.273
8.274
8.275
8.276
8.277
8.278
8.279
8.280
8.281
8.282
8.283
8.284
8.285.
8.286
8.287
8.288
8.289
8.290
8.291
8.292
8.293
8.294
8.295
8.296
8.297
8.298
8.299

[H+]
nEq/L
5.6236
5.6107
5.5978
5.5849
5.5721
5.5593
5.5465
5.5337
5.5210
5.5083
5.4956
5.4830
5.4704
5.4578
5.4453
5.4327
5.4202
5.4078
5.3953
5.3829
5.3706
5.3582
5.3459
5.3336
5.3213
5.3091
5.2969
5.2847
5.2725
5.2604
5.2483
5.2362
5.2242
5.2122
5.2002
5.1882
5.1763
5.1644
5.1525
5.1407
5.1289
5.1171
5.1053
5.0936
5.0818
5.0702
5.0585
5.0469
5.0353
5.0237



7.600
7.6901
7.602
72503
7.604
7.695
7-606
7.607
7.608
7.699
7.610
7.611
7-612
7.613
7.614
7.615
7.616
7.617
7.618
7.619
7.620
7.621
7.622
72623
72624
7.625
72626
7.627
72628
7.629
72630
7.631
7.632
7-633
7.634
7.635
7.636
7.637
72638
72639
72640
7.641
72642
72643
72644
7.645
72646
7.647
72648
7.649

[H+]
nEq/L
252119
252062
25.004
242946
24.889
24.832
24.775
24-718
24.661
24.604
24.548
246491
24.435
240379
244322
24.267
24.211
24.155
24.099
24.044
23.989
23.934
232879
23.824
23.769
23-714
232660
23.605
23.551
236497
232443
232389
23.335
23.281
232228
23.174
23.2121
23.068
23.015
226962
22.909
22.2856
22.804
22.751
22.699
22.647
22.595
22-6543
22.491
222439

pH

7.650
7.651
7.652
7.653
7.654
7.655
7.656
7.657
7.658
7.659
72660
7.661
7.662
7.663
72664
7.665
7.666
72667
7.668
7.669
7.670
7.671
To672
7.673
7.674
7.675
7.676
T2677
7.678
7.679
7.680
7.681
7.682
7.683
7.684
7.685
7.686
7.687
7.688
7.689
7.690
7.691
7.692
7.693
7.694
7.695
7.696
7.697
7.698
72699

21

pH values 7.600 — 7.749

[H¢]
nEq/L
22.388
22.336
22.285
22.234
22.182
22.131
22.080
22.030
21.979
21.928
21.878
21.828
21.778
21.727
21.677
21.628
21.578
21.528
21.479
21.429
21.380
21.331
21.282
21.233
21.184
21.135
21.087
21.038
20.990
20.942
20.893
20.845
20.797
20.750
20.702
20.654
20.607
20.559
20.512
20.465
20.418
20.371
20.324
20.277
20.231
20.184
20.138
20.091
20.045
19.999

pH

7.700
7.701
7.702
7.703
7.704
7.705
72706
7.707
7.708
7.709
7.710
7.711
7.712
7.713
7.714
Te715
7.716
7.717
7.718
7.719
7-720
7.721
7.722
7.723
7.724
7.725
ToT26
7.727
7.728
7.729
7.730
7.7321
7.732
7.733
72734
7.735
7.736
7.737
7.738
7.739
7.740
7.741
7.742
7.743
7.744
7.745
7.746
7.747
7.748
7.749

[He]
nEq/L
19.953
19.907
19.861
19.816
19.770
19.725
19.679
19.634
19.589
19.544
19.499
19.454
19.409
19.365
19.320
19.276
19.231
19.187
19.143
19.099
19.055
19.011
18.967
18.924
18.880
18.837
18.794
18.750
18.707
18.664
18.621
18.578
18.536
18.493
18.451
18.408
18.366
18.324
18.281
18.239
18.197
18.156
18.114
18.072
18.031
17.989
17.948
17.906
17.865
17.824



pH

6.990
6.901
6992
6.903
6.904
6.995
6-996
6.907
6.908
6.909
6.910
6.911
6.912
6.913
5.914
6.915
6.916
6.917
6.918
6.919
6.920
6.921
62922
6.923
6.924
6.925
6.926
6.927
6.928
6.929
6.930
6.931
6.932
6.933
6.934
6.935
6.936
6.937
6.938
6.939
62940
62941
6.942
62943
6.944
6.945
6.946
6.947
6.948
$949

[He]
nEq/L
125.90
125.61
125.32
125.03
124.74
424.45
124.17
123.88
123.60
123.31
123.03
122.75
122.46
122.18
121.90
121.62
121.34
121.06
120.78
120.51
120.23
119.95
119.68
119.40
119.13
118.85
118.58
118.31
118.04
117.76
117.49
117.22
116.95
116.68
116.42
116.15
115.88
115.61
115.35
115.08
114.82
114.55
114.29
114.03
113.77
113.50
113.24
112.98
112.72
112.46

pH

6.950
6.951
6.952
6.953
6.954
6.955
6.956
6.957
6.958
6.959
6.960
6.961
6.962
6.963
6.964
6.965
6.966
6.967
6.968
6.969
6.970
6.971
6.972
6.973
6.974
6.975
6.976
6.977
6.978
6.979
6.980
6.981
6.982
6.983
6.984
6.985
6.986
6.987
6.988
6.989
6.990
6.991
6.992
6.993
6.994
6.995
6.996
6.997
6.998
6.999

16

PH values 6.900 - 6.999

[H+]
nEq/L
112.20
111.95
111.69
111.43
111.18
110.92
110.67
110.41
110.16
109.90
109.65
109.40
109.15
108.90
108.65
108.40
108.15
107.90
107.65
107.40
107.16
106.91
106.66
106.42
106.17
105.93
105.68
105.44
105.20
104.96
104.72
104.48
104.23
104.00
103.76
103.52
103.28
103.04
102.80
102.57
102.33
102.10
101.86
101.63
101.39
101.16
100.93
100.70
100.46
100.23


5.750
5.751
5.752
5-753
5.754
5.755
50756
5.757
5.758
5.759
5-750
5.761
50752
50753
5.754
5.765
5.756
56757
5-758
5-759
5.770
5.771
5.772
5.773
5.774
5.775
5-776
5.777
5.778
50779
52780
5-781
5.782
5.783
5.784
50785
5.786
5.787
5.788
5.789
5.790
5.791
5.792
5.793
5.794
50795
5.796
5.797
5.798
5.799

[H+]
nEq/L
1778.3
1774.2
1770.1
1766.1
1762.0
1758.0
1753.9
1749.9
1745.9
1741.8
1737.8
1733.8
1729.9
1725.9
1721.9
1717.9
1714.0
1710.1
1706.1
1702.2
1698.3
1694.4
1690.5
1686.6
1682.7
1678.8
1675.0
1671.1
1667.3
1663.5
1659.6
1655.8
1652.0
1648.2
1644.4
1640.6
1636.9
1633.1
1629.3
1625.6
1621.8
1618.1
1614.4
1610.7
1607.0
1603.3
1599.6
1595.9
1592.2
1588.6

pH

5.800
5.801
5.802
5.803
5.804
5-805
5.806
5.807
5.808
5.809
5.810
5.811
5.812
5.813
5.814
5.815
5.816
5.817
5.818
5.819
5.820
5-821
5.822
5.823
5.824
5.825
5.826
5.827
5.828
52829
5.830
5.831
5.832
5.833
52834
5.835
5-836
5.837
5.838
5.839
5.840
5.841
5.842
5 843
52844
52845
5.846
5.847
5.848
56849

PH values 5.750 — 5.899

[H+]
nEq/L
1584.9
1581.3
1577.6
1574.0
1570.4
1566.8
1563.2
1559.6
1556.0
1552.4
1548.9
1545.3
1541.7
1538.2
1534.7
1531.1
1527.6
1524.1
1520.6
1517.1
1513.6
1510.1
1506.6
1503.2
1499.7
1496.3
1492.8
1489.4
1486.0
1482.6
1479.1
1475.7
1472.3
1469.0
1465.6
1462.2
1458.9
1455.5
1452.1
1448.8
1445.5
1442.2
1438.8
1435.5
1432.2
1428.9
1425.6
1422.4
1419.1
1415.8

pH

5.850
5.851
5.852
5.853
5.854
5.855
52856
5.857
5.858
5.859
5.860
5.861
5.862
5.853
52864
5.865
5.866
5.867
5.868
5.869
5.870
5-871
5.872
5.873
5.874
52875
5.876
5.877
5.878
5.879
5.880
5.881
5.882
5.883
5.884
5.885
5.886
5.887
5.888
5.889
5.890
5.891
5.892
5.893
5.894
5.895
5-896
5.897
5.898
5.899

[H+]
nEq/L
1412.6
1409.3
1406.1
1402.8
1399.6
1396.4
1393.2
1390.0
1386.8
1383.6
1380.4
1377.2
1374.1
1370.9
1367.8
1364.6
1361.5
1358.3
1355.2
1352.1
1349.0
1345.9
1342.8
1339.7
1336.6
1333.6
1330.5
1327.4
1324.4
1321.3
1318.3
1315.3
1312.2
1309.2
1306.2
1303.2
1300.2
1297.2
1294.2
1291.3
1288.3
1285.3
1282.4
1279.4
1276.5
1273.5
1270.6
1267.7
1264.8
1261.9


pH

8.600
8.691
8.602
8.603
8.504
8.605
8.606
8.507
8.608
8.609
8.610
8.611
8.612
8.613
8.614
8.615
8.615
8.617
8.618
8.619
8.520
8.621
8.622
8.623
8.624
8.625
8.626
8.627
8.628
8.629
8.630
8-631
8.632
8.633
8.634
8.635
B.636
8.637
8.638
8.639
B.640
8.641
B.642
8.643
B.644
8.645
8.646
B.647
8.648
8.649

[H+]
nEq/L
2.5121
2.5064
225006
204948
224891
224834
204777
224720
264663
244606
224550
264493
224437
224381
24325
264269
2.4213
2.4157
224102
224046
2.3991
223936
243881
2.3826
2.3771
2.3716
2.3662
23607
2.3553
2.3499
203445
223391
2.3337
2.3283
2.3230
2.3176
2.3123
2.3070
2.3017
242964
2.2911
2.2858
222806
262753
2.2701
262649
222597
202545
2.2493
262441

pH

8.650
8.651
8.652
8.653
8.654
8.655
8.656
8.657
8.658
8.659
8.660
8.661
8.662
8.663
8.664
8.665
8.656
8.667
8.668
8.669
8.670
8.671
8.672
8.673
8.674
8.675
8.676
8.677
8.678
8.679
8.680
8.681
8.682
8.683
8.684
8.685
8.686
8.687
8.688
8.689
8.690
8.691
8.692
86693
8.694
8.695
8.696
8.697
8.698
8.699

pH values 8.600-— 8.749

[H+]
nEq/L
2.2390
2.2338
2.2287
2.2236
2.2184
202133
2.2082
2.2032
2.1981
2.1930
2.1880
2.1830
2.1780
2.1729
2.1679
2.1630
2.1580
2.1530
2.1481
2.1431
2.1382
2.1333
2.1284
2.1235
2.1186
2.1137
2.1089
2.1040
2.20992
2.0943
2.0895
2.0847
2.0799
2.0752
2.0704
2.0656
2.0609
2.0561
2.0514
2.0467
2.0420
2.0373
2.0326
2.0279
2.0233
2.0186
2.0140
2.0093
2.0047
2.0001

pH

8.700
8.701
8.702
8.703
8.704
8.705
8.706
8.707
8.708
8.709
8.710
8.711
8.712
8.713
8.714
8.715
8.716
8.717
8.718
8.719
8.720
8.721
8.722
8.723
8.724
8.725
8.726
8.727
8.728
8.729
8.730
8.731
8.732
8.733
8.734
8.735
8.736
8.737
8.738
8.739
8.740
8.741
8.742
8.743
8.744
8.745
8.746
8.747
8.748
8.749

[H+]
nEq/L
1.9955
1.9909
1.9863
1.9818
1.9772
1.9727
1.9681
1.9636
1.9591
1.9546
1.9501
1.9456
1.9411
1.9367
1.9322
1.9278
1.9233
1.9189
1.9145
1.9101
1.9057
1.9013
1.8969
1.8926
1.8882
1.8839
1.8795
1.8752
1.8709
1.8666
1.8623
1.8580
1.8538
1.8495
1.8452
1.8410
1.8368
1.8325
1.8283
1.8241
1.8199
1.8157
1.8116
1.8074
1.8032
1.7991
1.7950
1.7908
1.7867
1.7826


pH

5.300
5.3901
5 2302
5.303
5.304
5.305
5.306
5.307
5.308
52309
5.310
5.311
5.312
5.313
5.314
5.315
5.316
5.317
5.318
5.319
5.320
5.321
52322
5.323
52324
5.325
50326
5.327
5.328
5.329
5.330
5.331
5.332
5.333
52334
5.335
5.336
52337
5.338
5.339
5.340
5.341
52342
50343
5.344
5345
52346
5.347
52348
52349

{H+]
nEq/L
5011.9
5000.4
4988.9
G9TT.4
4966.0
4954.5
4943.2
4931.8
4920.4
4909.1
4897.8
4886.6
4875.3
4864.1
4852.9
4841.8
4830.6
4819.5
4808.4
479764
4786.3
4775.3
476464
475364
4742.5
4731.6
4720.7
4709.8
4699.0
4688.2
467724
4666.6
4655.9
4645.2
4634.5
4623.9
4613.2
4602.6
4592.0
4581.5
4570.9
456064
4549.9
4539.5
4529.0
4518.6
4508.2
4497.8
4487.5
447722

pH

5.350
5.351
5.352
5.353
5.354
5.355
5.356
5.357
5.358
5.359
5.360
5.361
5.362
5.363
5.364
5.365
5.366
5.367
5.368
52369
5.370
5.371
50372
5.373
5.374
5.375
5.376
5.377
5.378
5.379
5.380
5.381
5.382
5.383
5.384
5.385
5.386
5.387
5.388
5.389
5.390
5.391
5.392
5.393
5.394
5.395
5.396
5.397
5.398
5.399

a

pH values 5.300 - 5.449

[H+]
nEq/L
4466.9
4456.6
4446.4
4436.1
4425.9
4415.8
4405.6
4395.5
4385.4
4375.3
4365.2
435502
4345.1
43352
4325.2
4315.2
4305.3
429544
4285.5
4275.7
4265-8
4256.0
4246.2
4236.5
4226.7
4217.0
4207.3
4197.6
4188.0
4178.4
4168.7
4159.2
4149.6
4140.0
4130.5
4121.0
4111.5
4102.1
4092.7
4063.2
4073.8
4064.5
4055.1
4045.8
4036.5
4027.2
4018.0
4008.7
3999.5
3990.3

pH

5.400
5.401
5-402
5.403
52404
5.405
52406
5.407
52408
5-409
5.410
5.411
50412
5.413
50414
5.415
5416
5.417
5.418
5.419
5.420
5.421
50422
5.423
5.424
52425
52426
5.427
5.428
5.429
5.430
5.431
5.432
5.433
50434
5.435
52436
5.437
52438
5.439
5.440
5.441
5 0442
52443
50444
5.445
52446
50447
5.448
52449

[H+]
nEq/L
3981.1
3972.0
3962.8
3953.7
3944.6
3935.5
3926.5
3917.5
3908.5
3899.5
3890.5
3881.6
3872.6
3863.7
3854.8
3846.0
383761
3628.3
3819.5
3810.7
3801.9
3793.2
3784.5
3775.8
376761
3758.4
3749.8
3741.2
3732.5
3724.0
371564
3706.9
3698.3
3689.8
3681.3
3672.9
3664.4
3656.0
364726
3639.2
3630.8
3622.5
3614.1
3605.8
3597.5
3589.3
3581.0
3572.8
3564.6
355604



pH

5.150
5.151
5.152
5.153
5.154
5.155
52156
5.157
5.158
5.159
5.150
5151
5.152
5.163
5.164
5.165
5.166
5.167
52168
50159
5.170
5.171
5.172
5.173
5 e174
5.175
5.176
5.177
5.178
50179
5.180
5181
5-182
5.183
5.184
50185
52186
5.187
5.188
5.189
5.190
5-191
5192
5.193
5.194
52195
52196
5.197
5.198
52199

[H+]
nEq/L

7079.5
7063.2
7047.0
7030.8
7014.6
6998.5
0982.4
6966.3
6950.3
6934.3
6918.3
6902.4
6886.6
6870.7
6854.9
6839.1
6823.4
6807.7
$792.1
677644
6760.9
6745.3
6729.8
6714.3
6698.9
6683.5
6668.1
6652.8
6637.5
6622.2
6607.0
6591.8
6576.6
6561.5
6546.4
6531.3
6516.3
6501.3
6486.4
6471.5
6456.6
6441.7
6426.9
6412.1
6397.4
6382.7
6368.0
6353.3
6338.7
6324.2

pH

5.200
5.201
5.202
5.203
5.204
5.205
52206
5.207
5-208
5.209
5.210
5.211
5.212
5.213
52214
5.215
5.216
5.217
5.218
5.219
5.220
5.221
52222
5.223
5.224
5.225
52226
5.227
5.228
5.229
5.230
5.231
5.232
5.233
5.234
5.235
5.236
5.237
5.0238
5.239
5.240
5.241
52242
5.243
52244
50245
52246
5.247
5.248
50249

PH values 5.150 - 5.299

[H+]
nEq/L

6309.6
6295.1
6280.6
6266.2
6251.8
6237.4
6223.0
6208.7
6194.4
6180.2
6166.0
6151.8
6137.7
6123.5
6109.5
6095.4
6081.4
6067.4
6053.4
6039.5
6025.6
6011.8
5997.9
5984.2
5970.4
5956.7
5943.0
5929.3
5915.7
5902.1
5888.5
5874.9
5861.4
5847.9
5834.5
5821.1
5807.7
5794.3
5781.0
5767.7
5754.4
5741.2
5728.0
5714.8
5701.7
5688.6
5675.5
5662.4
5649.4
5636.4

pH

5.250
5.251
5-252
5.253
5.254
5.255
5.256
5.257
52258
52259
5.260
5.261
5.262
5.263
52264
5-265
52266
5.267
5.268
5.269
5.270
5.271
5-272
5.273
5.274
5.275
5.276
5-277
5.278
5.279
52280
5-281
5.282
52283
52284
5.285
5.286
5-287
5.288
5.289
5.290
5.291
5.292
5.293
5.294
5.295
52296
5.297
5.298
5.299

[H+]
nEq/L

5623.5
5610.5
5597.6
5584.7
5571.9
5559.1
5546.3
5533.5
5520.8
5508.1
5495.5
5482.8
5470.2
5457.6
5445.1
5432.5
5420.1
5407.6
5395.1
5382.7
5370.4
5358.0
5345.7
5333.4
5321.1
5308.9
5296.7
5284.5
5272.3
5260.2
5248.1
5236.0
5224.0
5212.0
5200.0
5188.0
5176.1
5164.2
5152.3
5140.5
5128.7
5116.9
5105.1
5093.4
5081.6
5070.0
5058.3
5046.7
5035.1
5023.5


7.000
7.001
7.002
7.003
7.004
7.005
7.096
7.097
7.008
7.009
7.010
7.011
7.012
7.013
7.014
7.015
7.016
7.017
7.018
7.019
7.020
7.021
7.022
7.023
7.024
7.025
72026
7.027
7.028
7.029
7.030
7.031
7.032
72033
72034
7.035
7.036
7.037
7.038
7-039
7.040
7.041
7.042
7.043
7.044
7.045
7.046
7.2047
72048
73049

nEq/L
100.000
99.770
99.541
99.312
99.083
98.855
98.628
98.401
98.175
97.949
97.724
972499
97.275
97.051
96.828
96.605
96.383
96.161
952940
95.719
956499
95.280
95.061
94.842
94.624
94.406
94.189
93.972
93.756
93.541
93.326
93.111
92.897
92.683
92.470
92.257
92.045
91.833
91.622
91-411
91.201
90.991
90.782
90.573
90.365
90.157
89.950
89.743
89.537
89.331

pH

72050
7.051
7.052
7.053
7.054
7.055
7.056
7.057
7.058
7.059
7.060
7.061
7.062
7.063
7.064
7.065
7.066
7.067
7.068
7.069
7.070
7.071
7.072
7.073
7.074
7.075
7.076
7.077
7.078
7.079
7-080
7.081
7.082
7.083
7.084
7.085
7.086
7.087
7.088
7.089
7.090
7.091
7.092
7.093
7.094
7.095
7.096
7.097
7.098
7.099

17

pH values 7.000 - 7.149

[Ht]
nEq/L
89.125
88.920
88.716
88.512
88.308
88.105
87.902
87.700
87.499
87.297
87.097
66.896
86.696
86.497
86.298
66.100
85.902
85.704
85.507
85.310
85.114
84.918
84.723
84.528
84.334
84.140
83.946
83.753
83.560
83.368
83.177
82.985
82.794
82.604
82.414
82.224
82.035
81.847
81.658
81.471
81.283
61.096
60.910
80.724
80.538
80.353
80.168
79.984
79.800
79.616

pH

72100
7.101
7.102
7.103
7.104
7.105
7.106
7.107
7.108
7.109
7.110
Telll
Tell2
7.113
7.114
Te1Ls
Tell6
Tell?
7.118
7.119
7.120
Tel2l
7.122
7.123
T2124
72125
7.126
7.127
7.128
7.129
7.130
7.131
72132
7.133
7.134
7.135
72136
7.137
7.138
72139
72140
7.141
7.142
7.143
7.144
7.145
7.146
7.147
7.148
7.149

{Ht]
nEq/L
79.433
79.250
79.068
78.886
78.705
78.524
78.343
78.163
77.983
77.804
17.625
17.446
77.268
77.091
76.913
76.736
76.560
76.384
76.208
76.033
75.858
75.684
75.509
75.336
752163
74.990
74.817
714.645
74.473
74.302
74.131
73.961
73.791
73.621
73.452
73.283
73.114
72.946
72.778
72.611
12.444
72.277
72.111
71.945
71.780
71.615
71.450
71.286
71.122
70.958



pH

5.600
5.601
5.602
5.603
5.604
5.605
5.696
5.607
5.608
5.609
5.610
5.611
5-612
5.613
5.614
5.615
5.616
5.617
52618
5.619
5-620
5.621
5.622
52623
5.624
52625
5 2626
5.627
5.628
5.629
5 2630
5.631
5 2632
5.633
5 0634
5.635
5.636
5.637
5.638
5.639
5640
5.641
5 2642
5 0643
5.644
52645
52646
5.647
5 2648
52649

[H+]

nEq/L

2511.9
2506.2
250064
2494.6
2488.9
2483.2
247765
2471.8
2466.1
2460.4
2454.8
2449.1
2443.5
2437.9
2432.2
2426.7
2421.1
2415.5
2409.9
2404.4
2398.9
2393.4
2387.9
2382.4
2376.9
2371-4
2366.0
2360.5
2355.1
2349.7
2344.3
2338.9
2333.5
2328.1
2322.8
2317.4
2312.1
2306.8
2301.5
2296.2
2290.9
2285.6
2280.4
2275.1
2269.9
2264.7
2259.5
2254.3
2249.1
2243.9

pH

5.650
5.651
5.652
5-653
5.654
5.655
52656
5.657
5.658
52659
5.660
5.661
5.662
5.663
5.664
5.665
5-666
5.667
5.668
5.669
5.670
5.671
5.672
5.673
5.674
5.675
5.676
5.677
5.678
5.679
5.680
5.681
5.682
5.683
52684
5.685
5.686
5.687
5.688
5.689
5.690
5.691
5.692
5.693
5.694
5.695
5.696
5.697
5.698
52699

pH values 5.600 - 5.749

[H+]
nEq/L
2238.8
2233.6
2228.5
2223.4
2218.2
2213.1
2208.0
2203.0
2197.9
2192.8
2187.8
2182.8
217768
2172.7
2167.7
2162.8
2157.8
2152.8
2147.9
2142.9
2138.0
213361
2128.2
2123.3
2118.4
2113.5
2108.7
2103.8
2099.0
2094.2
2089.3
2084.5
2079.7
2075.0
2070.2
206544
2060.7
2055.9
2051.2
2046.5
2041.8
2037.1
2032.4
2027.7
2023.1
2018-4
2013.8
2009.1
2004.5
1999.9

pH

5.700
5.701
5.702
5.703
5.704
5.705
5.706
5.707
5.708
5.709
5.710
5.711
5.712
5.713
50714
5.715
5.716
5.717
5.718
5.719
5.720
5.721
5.722
5.723
52724
5.725
5.726
5.727
5.728
52729
5-730
5.731
5.732
5.733
5.734
5.735
5.736
5.737
5.738
5.739
5.740
50741
50742
5.743
5.744
5.745
5.746
5.747
5.748
5.749

[H+]
nEq/L
1995.3
1990.7
1986.1
1981.6
1977.0
1972.5
1967.9
1963.4
1958.9
1954.4
1949.9
1945.4
1940.9
1936.5
1932.0
1927.6
1923.1
1918.7
1914.3
1909.9
1905.5
1901.1
1896.7
1892.4
1888.0
1883.7
1879.4
1875.0
1870.7
186664
1862.1
1857.8
1853.6
1849.3
1845.1
1840.8
1836.6
183264
1828.1
1823.9
1819.7
1815.6
1811.4
1807.2
1803.1
1798.9
1794.8
1790.6
1786.5
1782.4



7.900
7.9901
7.992
7.903
7.994
7.905
72995
7.907
7.998
7.909
7.910
7.911
T9912
7.913
7.914
7.915
T2918
T9117
7.918
7.919
7-920
7.921
7.922
7.923
7-924
7.925
7.926
7.927
7.928
7.929
7.939
7.931
72932
7-933
7.934
7.935
7.936
7.937
7.938
7.939
7.940
7.941
72942
72943
72944
72945
72946
7.947
7.948
72949

pH

7.950
7.951
7.952
7.953
7.954
7.955
7.956
7.957
7.958
72959
7.960
7.961
7.962
7.963
7.964
7.965
7.966
7.967
7.968
7.969
7.970
7.971
7.972
7.973
7.974
7.975
7.976
7.977
7.978
7.979
7.980
7.981
7.982
7.983
7.984
7.985
72986
7.987
7.988
7.989
72990
7.991
7.992
7.993
7.994
7.995
72996
7.997
7.998
7.999

23

pH values 7.900 - 7.999

[H+]
nEq/L
11.221
11.195
11.169
11.143
11.118
11.092
11.067
11.041
11.016
10.990
10.965
10.940
10.915
10.890
10.865
10.840
10.815
10.790
10.765
10.740
10.716
10.691
10.666
10.642
10.617
10.593
10.568
10.544
10.520
10.496
10.472
10.448
10.423
10.400
10.376
10.352
10.328
10.304
10.280
10.257
10.233
10.210
10.186
10.163
10.139
10.116
10.093
10.070
10.046
10.023



AM 68-23

A TABLE FOR CONVERTING pH TO HYDROGEN ION
CONCENTRATION [H*] OVER THE RANGE 5—9

Vincent Fiorica, Ph.D.

Approved by Released by
Dhlad Rite (USiagel mo
J. Roserr Diute, M.D. P. V. Sixcer, M.D.
Cursr, Crvi. AFROMEDICAL Feperat Arr Surcron
Instrrure
October 1968

Department of Transportation

FEDERAL AVIATION ADMINISTRATION
Office of Aviation Medicine



6.000
6.001
6.002
6.003
6.004
6.005
6.096
6.097
6.008
6.009
6.010
6.011
6.012
$2013
6-014
6.015
6.016
6.017
6.018
6.019
6.020
6.021
6.022
6.023
6.024
6.025
6.026
6.027
6.028
6.029
6.030
6.031
6.032
6.033
6.034
6.035
6.036
6.037
6.038
6.039
6.040
6.041
6.042
6.043
$2044
6.045
6.046
6.047
6.048
6.049

[H+]
nEq/L
1000.00
997.70
995.41
993.12
990.83
988.55
986.28
984.01
981.75
979.49
977.24
974.99
972.75
970.51
968.28
966.05
963.83
961.61
959.40
957.19
954.99
952.80
950.61
948.42
946.24
944.06
941.89
939.72
937.56
935.41
933.26
931.11
928.97
926.83
924.70
922.57
920.45
918.33
916.22
914.11
912.01
909.91
907.82
905.73
903.65
901.57
899.50
897.43
895.37
893.31

pH

6.050
6.051
6.052
6.053
6.054
6.055
6.056
6.057
6.058
6.059
6.060
6.061
6.062
6.063
6.064
6.065
6.066
6.067
6.068
6.069
6.070
6.071
6.072
6.073
6.074
6.075
6.076
6.077
6.078
6.079
6.080
6.081
6.082
6.083
6.084
6.085
6.086
6.087
6.088
6.089
6.090
6.091
6.092
62093
6.094
6.095
62096
6.097
6.098
6.099

10

PH values 6.000 - 6.149

[H+]
nEq/L
891.25
889.20
887.16
885.12
883.08
881.05
879.02
877.00
874.99
872.97
870.97
868.96
866.96
864.97
862.98
861.00
859.02
857.04
855.07
853.10
851.14
849.18
847.23
845.28
843.34
841.40
839.46
837.53
835.60
833.68
831.77
829.85
827.94
826.04
824.14
822.24
820.35
818.47
816.58
814.71
812.83
810.96
809.10
807.24
805.38
803.53
801.68
799.84
798.00
796.16

pH

6,100
6.101
6.102
6.103
6.104
6.105
6.106
6.107
6.108
6.109
6.110
6.111
6-112
6.113
6.114
60115
6.116
6.117
6.118
6.119
6.120
6.121
6.122
6.123
6.124
6.125
62126
6.127
6.128
6.129
6.130
6.131
66132
6.133
60134
6.135
6.136
6.137
6.138
60139
6.140
6.141
6.142
60143
60144
6.145
60146
6.147
6.148
6.149

[H+]
nEq/L
794.33
792.50
790.68
788.86
787.05
785.24
783.43
781.63
779.83
778.04
776.25
774.46
772.68
770.91
769.13
767.36
765.60
763.84
762.08
760.33
758.58
756.84
755.09
753.36
751.63
749.90
748.17
746.45
744.73
743.02
741.31
739.61
737.91
736.21
734.52
732.83
T31.14
729.46
727.78
726.11
724.44
722.77
T21.11
719.45
717.80
716.15
714.50
712.86
711.22
709.58


5.900
5.901
5.992
5.903
52904
53905
5-996
5.907
5.908
5.909
5.910
5.911
5.912
5.913
5.914
5.915
5.916
5.917
5.918
5.919
5.920
5.921
5.922
5.923
5.924
5.925
5.926
5.927
5.928
5.929
5.930
5.931
5.932
5.933
5.934
5.935
5.936
5.937
5.938
5.939
5.940
5.941
5.942
5.943
50944
5.945
5.946
5.947
5.948
5949

1213.4
1210.6
1207.8
1205.1
1202.3
1199.5
1196.8
1194.0
1191.3
1188.5
1185.8
1183.1
1180.4
1177.6
1174.9
1172.2
1169.5
1166.8
1164.2
1161.5
1158.8
1156.1
1153.5
1150.8
1148.2
1145.5
1142.9
1140.3
1137.7
1135.0
1132.4
1129.8
1127.2
1124.6

pH

5.950
5.951
5.952
5.953
5.954
5.955
5.956
5.957
5.958
5.959
5.960
5.961
5.962
5.963
5.964
5.965
5.966
5.967
5.968
5.969
5.970
5.971
5.972
5.973
5.974
5.975
5.976
5.977
5.978
5.979
5.980
5.981
5.982
5.983
5.984
5.985
5.986
5.987
5.988
5.989
5.990
5.991
5.992
5.993
5.994
5.995
5.996
5.997
5.998
5.999

pH values 5.900 - 5.999

[H+]
nEg/L
1122.1
1119.5
1116.9
1114.3
1111.8
1109.2
1106.7
1104.1
1101.6
1099.0
1096.5
1094.0
1091.5
1089.0
1086.5
1084.0
1081.5
1079.0
1076.5
1074.0
1071.6
1069.1
1066.6
1064.2
1061.7
1059.3
1056.8
1054.4
1052.0
1049.6
1047.2
1044.8
1042.3
1040.0
103746
1035.2
1032.8
1030.4
1028.0
1025.7
1023.3
1021.0
1018.6
1016.3
1013.9
1011.6
1009.3
1007.0
1004.6
1002.3



pH

8.900
8.991
8.902
8.903
8.904
8.905
8.906
8.907
8.908
8.909
8.910
8.911
8.912
8.913
8.914
8.915
8.916
8.917
8.918
6.919
8.920
8.921
8.922
8.923
6.924
8.925
8.926
8.927
8.928
8.929
8.930
8.931
8.932
8.933
8.934
8.935
8.936
8.937
8.938
8.939
8.940
8.941
8.942
8.943
8.944
8.945
8.946
8.947
8.948
8.949

[H+]
nEq/L
1.2591
222562
1.2533
1.2504
1.2476
1.2447
1.2418
1.2390
1.2361
1.2333
1.2305
1.2276
1.2248
1.2220
1.2192
1.2164
1.2136
1.2108
1.2080
1.2052
1.2024
1.1997
1.1969
1.1942
1.1914
1.1887
1.1860
1.1832
1.1805
1.1778
1.1751
1.1724
1.1697
1.1670
1.1643
1.1616
1.1590
1.1563
1.1536
1.1510
1.1483
1.1457
1.1431
1.1404
1.1378
1.1352
1.1326
121300
1.1274
1.1248

pH

8.950
8.951
8.952
8.953
8.954
8.955
8.956
8.957
8.958
8.959
8.960
8.961
8.962
8.963
8.964
8.965
8.966
8.967
8.968
8.969
8.970
8.971
8.972
8.973
8.974
8.975
8.976
8.977
8.978
8.979
8.980
8.981
8.982
8.983
8.984
8.985
8.986
8.987
8.988
8.989
8.990
8.991
8.992
8.993
8.994
8.995
8.996
8.997
8.998
8.999

PH values 8.900- 8.999
[H+]

nEq/L
1.1222
1.1196
1.1170
1.1145
1.1119
1.1094
1.1068
1.1043
1.1017
1.0992
1.0967
1.0941
1.0916
1.0891
1.0866
1.0841
1.0816
1.0791
1.0766
1.0742
1.0717
1.0692
1.0668
1.0643
1.0619
1.0594
1.0570
1.0546
1.0521
1.0497
1.0473
1.0449
1.0425
1.0401
1.0377
1.0353
1.0329
1.0306
1.0282
1.0258
1.0235
1.0211
1.0188
1.0164
1.0141
1.0117
1.0094
1.0071

1.0048
1.0025


8.750
.8.751
8.752
8.753
8.754
8.755
8.756
8.757
8.758
8.759
8.750
8.751
8.752
B.753
B.764
8.755
8.756
B.75T7
8.768
8.759
8.770
8.771
8.772
8.773
B.TT4
8.775
8.776
8.777
B.778
8.779
8.780
8.781
8.782
8.783
8.734
8.785
8.786
8.787
8.788
8.789
8.7390
8.791
8.792
8.793
8.794
8.795
8.796
6.797
8.798
8.799

[H+]
nEq/L
1.7785
107744
1.7703
1.7663
1.7622
1.7581
1.7541
1.7501
1.7460
1.7420
1.7380
1.7340
1.7300
1.7261
1.7221
1.7181
1.7142
1.7102
1.7063
1.7024
1.6985
1.6946
1.6907
1.6868
1.6829
1.6790
1.6752
1.6713
1.6675
1.6636
1.6598
1.6560
1.6522
1.6484
1.6446
1.6408
1.6370
1.6333
1.6295
1.6258
1.6220
1.6183
1.6146
1.6109
1.6072
1.6035
1.5998
1.5961
1.5924
1.5888

pH

8.800
8.801
8.802
8.803
8.804
8.805
8.806
8.807
8.808
8.809
8.810
8.811
8.812
8.813
8.814
8.815
8.816
8.817
8.818
8.819
8.820
8.821
8.822
8.823
8.824
8.825
8.826
8.827
8.828
8.829
8.830
8.831
8.832
8.833
8.834
8.835
8.836
8.837
8.838
8.839
8.840
8.841
8.842
8.843
8.844
8.845
8.846
8.847
8.848
8.849

pH values 8,750 — 8.899

[H+]
nEq/L
1.5851
1.5815
1.5778
1.5742
1.5706
1.5670
1.5634
1.5598
1.5562
1.5526
1.5490
1.5455
1.5419
1.5384
1.5348
1.5313
1.5278
1.5243
1.5208
1.5173
1.5138
1.5103
1.5068
1.5033
1.4999
1.4964
1.4930
1.4896
1.4861
1.4827
1.4793
1.4759
1.4725
1.4691
1.4658
1.4624
1.4590
1.4557
1.4523
1.4490
1.4456
1.4423
1.4390
1.4357
1.4324
1.4291
1.4258
1.4225
1.4193
1.4160

pH

8.850
8.851
8.852
8.853
8.854
8.855
8.856
8.857
8.858
8.859
8.860
8.861
8.862
8.863
8.864
8.865
8.866
8.867
8.868
8.869
8.870
8.871
8.872
8.873
8.874
8.875
8.876
8.877
8.878
8.879
8.880
8.881
8.882
8.883
8.884
8.885
8.886
8.887
8.888
8.889
8.890
8.891
8.892
8.893
8.894
8.895
8.896
8.897
8.898
8.899

[H+]
nEq/L
1.4127
1.4095
1.4062
1.4030
1.3998
1.3966
1.3934
1.3902
1.3870
1.3838
1.3806
1.3774
1.3742
1.3711
1.3679
1.3648
1.3616
1.3585
1.3554
1.3523
1.3492
1.3461
1.3430
1.3399
1.3368
1.3337
1.3306
1.3276
1.3245
1.3215
1.3185
1.3154
1.3124
1.3094
1.3064
1.3034
1.3004
1.2974
1.2944
1.2914
1.2884
1.2855
1.2825
1.2796
1.2766
1.2737
1.2708
1.2678
1.2649
1.2620



5.450
5.451
50452
50453
52454
5.455
52456
52457
5.458
50459
5450
5461
56462
5 0453
52454
50465
5 2466
50467
5 2468
52469
50470
50471
50472
50473
50474
50475
5.476
56477
5.478
52479
5.480
5.431
5 0482
5 6483
5 0484
5.485
52486
52487
5-488
52489
5.490
5.491
56492
50493
50494
56495
5.496
52497
52498
5499

[H+]
nEq/L
3548.2
3540.0
3531.9
3523.8
3515.7
3507.6
3499.5
3491.5
3483.4
3475.4
3467.4
3459.4
3451.5
3443.5
3435.6
3427.7
3419.8
3412.0
3404.1
3396.3
3388.5
3380.7
3372.9
3365.2
3357.4
3349.7
3342.0
3334.3
3326.6
3319.0
3311.4
3303.7
3296.1
3288.6
3281.0
3273.5
3265.9
3258.4
3250.9
3243.4
3236.0
3228.5
3221.1
3213.7
3206.3
3198.9
3191.6
3184.2
3176.9
3169.6

5.500
3.501
5.502
5.503
5.504
52505
5.506
5.507
5.508
5.509
5.510
5.511
5.512
5.513
5.514
5.515
5.516
5.517
5.518
5.519
5.520
5.521
52522
52523
52524
5.525
5526
5.527
5.528
52529
5.530
5.531
5.532
52533
50534
5.535
5.536
50537
5.538
5.539
52540
5.541
5.542
50543
5.544
5-545
52546
5.547
5.548
5.549

PH values 5.450 — 5.599

[H+]
nEq/L
3162.3
3155.1
3147.8
3140.6
3133.3
3126.1
3118.9
3111.8
3104.6
3097.5
3090.3
3083.2
3076.1
3069.1
3062.0
3055.0
3047.9
3040.9
3033.9
3027.0
3020.0
3013.1
3006.1
2999.2
2992.3
2985.4
2978.6
2971.7
2964.9
2958.1
2951.3
2944.5
2937.7
2930.9
2924.2
2917.5
2910.8
2904.1
289764
2890.7
2884.1
2877.4
2870.8
2864.2
285766
2851.1
2844.5
2838.0
2831.4
2824.9

pH

5.550
5.551
5.552
5.553
5.554
5.555
5.556
5.557
5.558
5.559
5-560
5.561
5.562
5.563
52564
5.565
5.566
5.567
5.568
5.569
5.570
5.571
5.572
5.573
5.574
5.575
5.576
5.577
5.578
5.579
5.580
5.581
5.582
5.583
5-584
5.585
52586
5.587
5.588
5.589
5.590
5.591
5.592
52593
5.594
5.595
5.596
5.597
5.598
5.599

[H+]
nEq/L
2818.4
2811.9
2805.5
2799.0
2792.6
2786.2
2779.8
2773.4
2767.0
2760.6
2754.3
2747.9
2741.6
2735.3
2729.0
2722.7
2716.5
2710.2
2704.0
2697.8
2691.6
2685.4
2679.2
2673.1
2666.9
2660.8
2654.7
2648.5
2642.5
2636.4
2630.3
2624.3
2618.2
2612.2
2606.2
2600.2
2594.2
2588.3
2582.3
2576.4
2570.4
2564.5
2558.6
2552.7
2546.9
2541.0
2535.2
2529.3
2523.5
2517.7


pH

72450
7.451
72452
72453
72454
72455
72456
7.457
70458
72459
7.450
7.451
72452
72453
7-464
7455
72456
7467
72458
7469
7.470
7.471
72472
72473
72474
7.475
7.476
T2477
7.478
7.479
7.480
7.431
72482
7.483
72484
72485
7.486
72487
7488
72489
7.490
7.491
70492
72493
70494
72495
72496
T49T
72498
7.499

[H+]
nEqg/L
354482
35.400
35.319
352238
352157
35.076
34.995
34.915
34.834
34.754
34.674
34.594
34.515
34.435
34.356
34.277
34.198
342120
34.041
332963
33.885
33.807
33.729
33.652
33.574
33.497
33.420
33.343
33.266
332190
33.114
33.037
32.961
32.886
32.810
32.735
32.659
322584
322509
322434
32.360
322285
322211
32.137
32.063
31.989
31.916
31.842
31-769
31.696

pH

7.500
7.501
7.502
7.503
7.504
7.505
7-506
7.507
7.508

7.509

7.510
Te5LL
7.512
7.513
7.514
7.515
7.516
Te51T
7.518
7.519
7.520
7.521
7.522
7.523
72524
7.525
7.526
7.527
7.528
7.529
72530
7.531
7.532
7.533
7.534
7.535
7.536
7.537
7.538
7.539
7.540
7.541
7.542
72543
70544
72545
7.546
74547
7.548
7.549

20

pH values 7.450 —- 7.599

[H+]
nEq/L
31.623
31.551
31.478
31.406
31.333
31.261
31.189
31.118
31.046
30.975
30.903
30.832
30.761
30.691
30.620
30.550
30.479
30.409
30.339
30.270
30.200
30.131
30.061
29.992
29.923
29.854
29.786
29.717
29.649
29.581
29.513
294445
29.377
29.309
29.242
29.175
29.108
29.041
28.974
28.907
28.841
28.774
28.708
28.642
28.576
28.511
28.445
28.380
28.314
28.249

pH

7.550
7.551
7.552
7.553
7.554
7.555
7.556
7.557
7.558
7.559
7.560
7.561
7.562
7.563
7.564
7.565
7.566
7.567
7.568
7.569
7.570
7.571
7.572
7.573
7.574
7.575
7.576
7.577
7.578
7.579
7.580
7.581
7.582
72583
7.584
72585
72586
7.587
7.588
7.589
7.590
7.591
7.592
72593
72594
72.595
72596
7.597
7.598
7.599

[H+]
nEq/L
28.184
28.119
28.055
27.990
27.926
27.862
27.798
27.734
27.670
27.606
27.543
27.479
27.416
27.353
272290
27.227
27.165
27.102
272040
26.978
26.916
26.854
26.792
26.731
26.669
26.608
26.547
26-485
26.425
26.364
26-303
262243
26.182
26.122
26.062
26.002
25.942
25.883
25.823
25.764
25.704
25.645
25.586
25.527
254469
252410
252352
25.293
254235
25.177


8.300
8.301
8.302
8.393
8.304
8.305
8.396
8.397
8.308
8.309
8.310
8.311
8.312
8.313
8.314
8315
8-316
8.317
8.3168
8.319
8-320
8.321
8.322
8.323
8.324
8.325
8.326
8.327
8.328
8.329
8.330
8.331
8.332
8.333
6.334
8.335
8.336
8.337
8.338
8.339
8.340
3.341
8.342
8.343
8.344
8.345
8.346
8.347
8.348
8.349

[H+]
nEq/L
5.0121
530006
4.9891
4.9776
4.9662
4.9548
469434
4.9320
4.9206
4.9093
4.8980
4.8868
4.8755
4.8643
408531
4.8420
4.8308
468197
4.8086
4.7976
4.7866
4.1755
4.7646
4.7536
4.7427
4.7318
467209
4.7100
4.6992
4.6884
406776
4.6669
4.6561
406454
406347
4.6241
4.6134
4.6028
4.5922
4.5817
4.5711
4.5606
4.5501
4.5397
4.5292
4.5188
4.5084
4.4981
4.4877
44774

pH

8.350
8.351
8.352
8.353
8.354
8.355
8.356
8.357
8.358
8.359
8.360
8.361
8.362
8.363
82364
8.365
82366
8.367
8.368
8.369
82370
8.371
8.372
8.373
8.374
8.375
8.376
8.377
8.378
8.379
8.380
8.381
8.382
8.383
8.384
8.385
8.386
8.387
8.388
8.389
8.390
8.391
8.392
8.393
8.394
8.395
82396
8.397
8.398
8.399

26

pH values 8.300 —- 8.449

[H+]
nEq/L
4.4671
4.4568
424466
4.4363
4.4261
424160
4.4058
4.3957
4.3856
4.3755
4.3654
4.3554
4.3454
4.3354
4.3254
4.3155
4.3055
4.2956
4.2857
4.2759
4.2661
422562
402465
4.2367
4.2269
4.2172
4.2075
4.1979
4.1882
4.1786
4.1690
4.1594
4.1498
401403
4.1307
4.1212
4.1118
4.1023
4.0929
4.0835
4.0741
4.0647
4.0554
4.0460
4.0367
4.0274
4.0182
4.0089
3.9997
3.9905

pH

8.400
8.401
8.402
8.403
8.404
8.405
8.406
8.407
8.408
8.409
8.410
8.411
8.412
8.413
8.414
8.415
8.416
8.417
8.418
8.419
8.420
8.421
8.422
8.423
8.424
8.425
8.426
8.427
8.428
8.429
8.430
8.431
8.432
8.433
8.434
8.435
8.436
8.437
8.438
8.439
8.440
8.441
8.442
8.443
8.444
8.445
8.446
8.447
8.448
8.449

[H+]
nEq/L
3.9813
3.9722
3.9630
3.9539
3.9448
3.9358
3.9267
3.9177
3.9087
3.8997
3.8907
3.8818
3.8728
3.8639
3.8550
328462
3.8373
3.8285
3.8197
3.8109
3.8022
3.7934
3.7847
3.7760
3.7673
3.7586
3.7500
307414
3.7328
3.7242
3.7156
3.7071
3.6985
326900
3.6816
3.6731
3.46646
3.6562
326478
3.6394
326310
3.6227
326144
3.6061
325978
3.5895
3.5812
325730
3.5648
3.5566


wp

REFERENCES

. Wurreneap, T. P.: Blood Hydrogen Ion: Terminology,

Physiology and Clinical Application, in Advances in
Clinical Chemistry, (C. P. Stewart and H. Sobotka,
eds.) Vol. 9, New York, Academic Press, 1967, pp
195-226.

. Report by Ad-Hoc Committee of New York Academy

of Sciences Conference: Acid-Base Terminology,
Lancet, November 13, 1965, pp 1010-1012.
Wuireneap, T. P.: Acid-Base Status, pH, and Poo,

Lancet, November 13, 1965, pp 1015-1016.

. Huckaser, W. E.: Henderson vs. Hasselbalch, Clin.

Research 9: 116-119, 1961.

5, Astrup, P.: Ultra-micro-method for determining pH;
Pgo, and Standard Bicarbonate in Capillary Blood,
in Symposium on Blood pH and Blood Gas Measure-
ments, (R. F. Woolmer, ed.) London, Churchill, 1959,
p. 81-100.

6. AstruP, P.: A New Approach to Acid-Base Metab-
olism, Clin, Chem, 7: 1-15, 1961.
7. Asrrup, P., SIGAARD-ANDERSEN, O., JonceNsEN, K., and

Enort, K.: The Acid-Base Metabolism. A New Ap-
proach. Lancet, May 14, 1960, pp 1085-1039.


64450
6.451
66452
62453
62454
6.455
62456
60457
60458
6.459
62460
6.461
62452
62463
62464
6-465
6.466
66467
6 0468
66459
64470
6.471
66472
6-473
66474
6.475
6.476
66477
6.478
6.479
62480
6.481
62482
6.483
64484
60435
6.486
6.487
60488
6.489
6.490
66491
60492
62493
62494
60495
62496
66497
6-498
6.499

[H+]
nEq/L
354.82
354.00
353.19
352-38
351.57
350.76
349.95
349.15
348.34
347.54
346.14
345.94
345.15
344.35
343.256
342.77
341.98
341.20
340.41
339.63
338.85
338.07
337.29
336.52
335.74
334.97
334.20
333.43
332.66
331.290
331.14
330.37
329.61
328.86
328.10
327.35
326.59
325.84
325.09
324.34
323.60
322.85
322.11
321.37
320.63
319.89
319.16
318.42
317.69
316.96

pH

6.500
6.501
6.502
62593
6.504
6-505
6.506
6.507
6.508
6.509
6-510
6-511
6.512
6.513
6.514
6.515
6.516
6.517
6.518
6.519
6.520
6-521
62522
6.523
6.524
6.525
6.526
6.527
6.528
6.529
6.530
6.531
6.532
6.533
62534
6.535
6.536
6.537
6.538
6.539
6.540
6.541
64542
60543
60544
6.545
62546
6.547
6.548
6.549

13

pH values 6.450 —- 6.599

(H+]
nEg/L

316.23
315.51
314.78
314.06
313.33
312.61
311.89
311.18
310.46
309.75
309.03
308.32
307.61
306.91
306.20
305.50
304.79
304.09
303.39
302.70
302.00
301.31
300.61
299.92
299.23
298.54
297.86
297.17
296.49
295.81
295.13
294.45
293.77
293.09
292.42
291.75
291.08
290.41
289.74
289.07
288.41
287.74
287.08
286.42
285.76
285.11
284.45
283.80
283.14
282.49

pH

6.550
6.551
6.552
6.553
6.554
6.555
62556
6.557
6.558
6.559
6.560
6.561
62562
6.563
6.564
6.565
62566
6.567
62568
62569
6.570
6.571
6.572
6.573
6.574
6.575
6.576
6.577
6.578
6.579
6.580
6-581
6.582
6.583
6.584
6.585
6.586
6.587
6.588
6.589
6.590
6.591
60592
6.593
6.594
6.595
6.596
6.597
6.598
6.599

[H+]
nEq/L
281.84
281.19
280.55
279.90
279226
278.62
277298
277.34
276.70
276.06
275043
274.79
274.16
273.53
272.90
272.27
271.65
271.02
270.40
269.78
269.16
268.54
267.92
267.31
266.69
266.08
265.47
264.85
264625
263.64
263.03
262.43
261.82
261.22
260.62
260.02
259242
258.83
258423
257264
257.04
256.45
255.86
255.27
254.69
254210
253.52
252.93
252.35
251.77



62750
6.751
6.752
6.753
6.754
6.755
62756
6.757
6.758
6.759
6.750
6.751
62752
6.753
6-764
6.765
6.766
6.757
6.758
6.769
62770
6.771
6.772
6.773
60774
6.775
64776
6.777
6.778
6.779
6-780
6.781
6.782
6.783
6.784
6.785
6.786
6.787
6.788
6.789
6.790
66791
6.792
6.793
6.7194
6.795
6-795
6.797
6.798
6.799

[H+]

nEq/L

- 177.83

177.42
177.01
176.61
176.20
175.80
175.39
174.99
174.59
174.18
173.78
173.38
172.99
172.59
172.19
171.79
171.40
171.01
170.61
170.22
169.83
169.44
169.05
168.66
168.27
167.88
167.50
167.11
166.73
166.35
165.96
165.58
165.20
164.82
164644
164.06
163.69
163.31
162.93
162.56
162.18
161.81
161.44
161.07
160.70
160.33
159.96
159.59
159.22
158.86

6.800
6.801
6.802
6.803
6.804
6.805
6.806
6.807
6.808
6.809
6.810
6.811
6.812
6.813
6.814
6.815
6.816
6.817
6.818
6.819
62820
6.821
6.822
6.823
6.824
6.825
6.826
6.827
6.828
6.829
6.830
6.831
6.832
6.833
6.834
6.835
6.836
6.837
6.838
6.839
62840
6.841
6.842
6.843
62844
6.845
6.846
6.847
6.848
6.849

pH values 6.750 -6.899

[H+]
nEq@/L
158.49
158.13
157.76
157.40
157.04
156.68
156.32
155.96
155.60
155.24
154.89
154.53
154.17
153.82
153.47
153.11
152.76
152.41
152.06
151.71
151.36
151.01
150.66
150.32
149.97
149.63
149.28
148.94
148.60
148.26
147.91
147.57
147.23
146.90
146.56
146.22
145.89
145.55
145.21
144.88
144.55
144.22
143.88
143.55
143.22
142.89
142.56
142.24
141.91
141.58

pH

6.850
6.851
6.852
6.853
6.854
6.855
6.856
6.857
6.858
6.859
6.860
6.861
62862
60863
6.864
6.865
6.866
6.867
6.868
6-869
6.870
6.871
6.872
6.873
6.874
6.875
6.876
6.877
6.878
6.879
6-880
6.881
6.882
6.883
6.884
6.885
6.886
62887
6.888
6.889
6.890
6.891
6.892
6.893
62894
62895
6.896
6.897
6.898
6.899

[H+]
nEg/L
141.26
140.93
140.61
140.28
139.96
139.64
139.32
139.00
138.68
138.36
138.04
137.72
137.41
137.09
136.78
136.46
136.15
135.83
135.52
135.21
134.90
134.59
134.28
133.97
133.66
133.36
133.05
132.74
132.44
132.13
131.83
131.53
131.22
130.92
130.62
130.32
130.02
129.72
129.42
129.13
128.83
128.53
128.24
127.94
127265
127.35
127.06
126.77
126.48
126.19



A TABLE FOR COVERTING pH TO HYDROGEN ION CONCENTRATION
[H*] OVER THE RANGE 5—9

“If the determination of blood pH is to be
meaningful in clinical investigation, it must be
accompanied by a differential assessment of the
respiratory changes in hydrogen ion concentra-
tion and the changes due to a number of other
mechanisms that can be conveniently grouped
as nonrespiratory.”*

There has been increasing concern, in recent
years, over the lack of standard terminology and
the confusion that has consequently arisen in the
expression of parameters commonly measured to
evaluate acid-base status.4?* A specific problem
derives from the common usage of the pH nota-
tion to define the overall activity of the hydrogen
jon in blood. Since the total hydrogen ion
activity in blood is a function of respiratory
and nonrespiratory components, the use of pH
to define the total hydrogen ion concentration
does not readily permit a quantitative evaluation
of those components in terms of pH.

Recent developments in techniques for meas-
uring blood pH®*7 now permit a differentiation
of the respiratory and nonrespiratory components
of blood pH in terms of hydrogen ion equiv-
alents. This fact coupled with the recent dem-
onstration of a simplified system for evaluating
acid-base status? may encourage a greater usage
of hydrogen ion concentration units, rather than
pH, to express changes in blood hydrogen ion.
It is anticipated that in both medical research
and clinical application the use of the pH nota-
tion will eventually diminish in favor of the

more easily integrated (with respect to acid-base
status) expression of hydrogen ion concentration.

During the course of our recent studies on the
alteration in blood hydrogen ion concentration
during hyperventilation, it became apparent that
much of the time spent in the computation of
[H+] from pH could have been saved if a com-
prehensive conversion table were available. A
search through the available literature disclosed
the simplified conversion chart of Whitehead",
but no tables. Although adequate for some pur-
poses, the conversion chart was limited in range
(pH 7.0-8.0) and in readability (~0.01 pH;
~2 nEq/liter [H+]).

To offset these limitations, conversion tables
were constructed over a range covering most
biological applications (pH 5.000-8.999), An
additional advantage of the tables is that [H+]
in nanoequivalents per liter (nEq/liter) may be
found directly for any pH within the range to
0.001 pH. The following tables are photographic
reproductions of a computer print-out and were
derived from the general expression

pH = —log [H+] =loe prey

This expression assumes an activity coefficient
(aut) for hydrogen ion of 1.

The convenience in using these tables has
prompted us to reproduce them for distribution
to others working with the measurement of pH
in biological fluids.



8.000
8.001
8.002
8.003
8.004
8.005
8.096
8.007
8.008
8.009
8.010
8.011
8.012
8.013
8.014
8.015
8.016
8.017
8.018
8.019
8.020
8.021
8.022
8.023
8.024
8.025
8.026
8.027
8.028
8.029
8.030
8.031
8.032
8.033
8.034
8.035
8.036
8.037
8.038
8.039
8.040
8.041
8.042
B 2043
8.044
8.045
B.046
8.047
8.048
8.049

(H+]
nEq/L
10.0000
9.9770
969541
9.9312
9.9083
9.8855
9.8628
9.8401
9.8175
9.7949
9e7724
9.7499
9.7275
9.7051
9.6828
9.6605
9.6383
926162
925940
9.5720
9.5500
9.5280
9.5061
944842
924624
924406
924189
9.3973
9.3757
9.3541
9.3326
9.3111
9.2897
9.2683
9.2470
942258
922046
9.1834
921623
921412
9.1202
9.0992
920783
9.0574
9.0366
9.0158
8.9950
8.9744
8e953T7
8.9331

pH

8.050
8.051
8.052
8.053
8.054
8.055
8.056
8.057
8.058
8.059
8.060
8.061
8.062
8.063
8.064
8.065
8.066
8.067
8.068
8.069
8.070
8.071
8.072
8.073
8.074
8.075
8.076
8.077
8.078
8.079
8.080
8.081
8.082
8.083
8.084
8.085
8.086
8.087
8.088
8.089
8.090
8.091
8.092
8.093
8.094
8.095
8.096
8.097
8.098
8.099

24

pH values 8.000 —- 8.149

CH+]
nEq/L
8.9126
8.8921
8.8716
8.8512
8.8309
8.8106
8.7903
8.7701
8.7499
8.7298
8.7097
8.6897
8.6697
8.6498
8.6299
8.6100
8.5902
8.5705
8.5508
8.5311
8.5115
8.4919
8.4724
8.4529
8.4335
8.4141
8.3947
6.3754
8.3561
8.3369
8.3177
8.2986
8.2795
8.2605
8.2415
8.2225
8.2036
8.1848
8.1659
8.1472
821284
8.1097
8.0911
8.0725
8.0539
8.0354
8.0169
72-9985
7.9801
7.9617

pH

8.100
8.101
8.102
8.103
8.104
8.105
8.106
8.107
8.108
8.109
8.110
8.111
8.112
8.113
8.114
8.115
8.116
8.117
8.118
8.119
8.120
8.121
8.122
8.123
8.124
8.125
8.126
8.127
8.128
8.129
8.130
8.131
8.132
8.133
8.134
8.135
8.136
8.137
8.138
8.139
8.140
8.141
8.142
8.143
8.144
8.145
8.146
8.147
8.148
8.149

[H+]
nEq/L
729434
729251
7.9069
7.8887
7.8706
7.8525
7.8344
7.8164
7.7984
7.7805
7.7626
727448
7.7270
7.7092
7.6915
7.6738
7.6561
7.6385
7.6209
7.6034
7.5859
7.5685
7.5511
7.5337
7.5164
7.4991
7.4819
724646
724475
724304
7.4133
7.3962
7.3792
7.3622
7.3453
7.3284
7.3116
702947
7.2780
722612
702445
7.2279
7.2112
7.1947
7.1781
7.1616
721451
7.1287
7.1123
7.0960


ACKNOWLEDGMENTS

The author expresses his thanks to Mr. E. D. Folk, Chief, Biostatistical
Staff, for his advice in the construction and display of the tables and to
Wyoma M. Webber, Scientific Section, Management Systems Branch, for
computer programming services.

Qualified requesters may obtain Aviation Medical Reports from Defense Documentation
Center. The general public may purchase from Clearinghouse for Federal Scientific and
Technical Information, U.S. Dept. of Commerce, Springfield, Va. 22151,


pH

8.450
8.451
82452
8.453
B2454
8.455
8.456
8.457
8.458
8.459
8.460
8.451
8-452
8.463
82464
8.4465
8.456
8.457
8.468
8.459
8.470
B.471
8.472
8.473
8.474
8.475
8.476
8.477
8.478
8.479
6.480
8.481
8.432
8.483
8.484
8.485
8.486
8.487
8.488
8.489
8.490
8.491
8.492
82493
86494
8.495
8.496
86497
8.498
8.499

(H+]
nEq/L
3.5484
3.5402
3.5321
3.5240
3.5159
3.5078
324997
3.4917
3.4836
3.4756
3.4676
3.4597
324517
304438
344358
3.4279
3.4201
3.4122
3.24043
3.3965
3.3887
3.3809
3.3731
3.3654
3.3576
3.3499
323422
3.3345
343269
3.3192
3.3116
3.3040
322964
3.2888
3.2812
3.2737
322661
322586
3.2511
3.2437
322362
3.2288
3.2213
3.2139
3.2065
321992
3.1918
341845
3.1771
3.1698

pH

8.500
8.501
8.502
8.503
8.504
8.505
8.506
8.507
8.508
8.509
8.510
8.511
8.512
8.513
8.514
8.515
8.516
8.517
8.518
8.519
8.520
8.521
8.522
8.523
8.524
8.525
8.526
8.527
8.528
8.529
8.530
8.531
8.532
8.533
8.534
8.535
8.536
8.537
8.538
8.539
8.540
8.541
8.542
82543
82544
8.545
8.546
8.547
8.548
8.549

we
a

pH values 8.450 - 8.599

[H+]
nEq/L
321625
3.1553
3.1480
3.1408
321335
321263
3.1192
3.1120
3.1048
3.0977
34-0906
3.0835
30764
3.0693
320622
3.0552
3.0482
3.0411
3.20342
3.0272
3.0202
3.0133
320063
229994
2.9925
2.9856
2.9788
2.9719
2.9651
2.9563
2.9515
2.9447
2.9379
2.9312
2.9244
2.9177
2.9110
2.9043
2.8976
2.8909
2.8843
2.8777
2.8710
268644
2.8578
2.8513
2.8447
2.8382
2.8317
2.8251

pH

8.550
8.551
8.552
8.553
8.554
8.555
8.556
8.557
8.558
8.559
8.560
8.561
8.562
8.563
8.564
8.565
8.566
8.567
8.568
8.569
8.570
8.571
8.572
8.573
8.574
8.575
8.576
8.577
8.578
8.579
8.580
8.581
8.582
8.583
8.584
8.585
B.586
8.587
8.588
8.589
8.590
8.591
8.592
8.593
8.594
8.595
8.596
8.597
8.598
8.599

[He]
nEq/L
2.8186
2.8122
2.8057
2.7992
2.7928
2.7864
2.7800
2.7736
2.7672
2.7608
267545
2.7482
2.7418
2.7355
227292
2.7230
2.7167
2.7104
2.7042
2.6980
2.6918
226856
206794
2.6733
2.6671
2.6610
226549
2.6488
2.6427
2.6366
2.6305
266245
2.6184
2.6124
226064
2.6004
225944
2.5885
2.5825
2.5766
2.5706
2.5647
2.5588
2.5530
2.5471
2.5412
2.25354
2.5295
2.5237
2.5179



6.150
6.151
60152
6.153
6.154
6.155
6.156
6.157
6.158
6.159
62160
6.151
6-162
6.153
6.164
6.155
6.156
6.157
6.168
64159
6-170
6.171
6.172
6.173
50174
6.175
6.176
66177
6.178
6.179
6.180
6.181
6.182
6.183
6.184
6.185
6.186
6.187
6.188
6.189
6-190
6-191
6.192
6.193
6.194
6.195
6.196
6-197
6.198
6.199

[Ht]
nEq/L
107.95
706.32
704.70
703.08
701.46
699.85
698.24
696.63
695.03
693.43
691.83
690.24
688.66
687.07
685.49
683.91
682.34
680.77
679.21
677.64
676.09
674.53
672.98
671.43
669.89
668.35
666.81
665428
663.75
662.22
660.70
059.18
657.66
656.15
654.64
653.13
651.63
650.13
648.64
647.15
645.66
644.17
642.69
641.21
639.74
638.27
636.80
635.33
633.87
632.42

pH

6-200
6.201
6.202
6.203
66204
64205
6.206
6207
6.208
6.209
64210
6.211
6.212
60213
66214
6-215
6.216
66217
64218
66219
6-220
6.221
64222
64223
646224
6.225
66226
6.227
64228
6.229
64230
6-231
64232
62233
64234
60235
64236
64237
64238
64239
6-240
6.241
64242
64243
6.244
64245
64246
66247
64248
64249

11

pH values 6.150 - 6.299

[H+]
nEq/L
630.96
629.51
628.06
626262
625.18
623.74
622.30
620.87
619.44
618.02
616.60
615.18
613.77
612.35
610.95
609.54
608.14
606.74
605.34
603.95
602.56
601.18
599.80
598.42
597.04
595.67
594.30
592.93
591.57
590.21
588.85
587.49
586.14
584.79
583.45
582.11
580.77
579.43
578.10
576.77
575644
574.12
572.80
571.48
570.17
568.86
567.55
566.24
564.94
563.64

pH

6.250
6.251
6.252
6.253
62254
6.255
6.256
6.257
6.258
6.259
62260
6.261
6.262
6.263
62264
60265
6.266
6.267
6.268
60269
62270
6.271
6.272
6.273
60274
6.275
6.276
6.277
6.278
6.279
62280
6.281
6.282
6.283
6.284
6.285
6.286
6.287
6.288
6.289
6.290
6.291
62292
6.293
6.294
6.295
6.296
6.297
6.298
6.299

[H+]
nEq/L
562.35
561.05
559.76
558.47
557.19
555.91
554.63
553.35
552.08
550.81
549.55
548.28
547.02
545.76
544.51
543.25
542.01
540.76
539.51
538.27
537.04
535.80
534.57
533.34
532.11
530.89
529.67
528.45
527.23
526.02
524.81
523.60
522.40
521.20
520.00
518.80
517.61
516.42
515.23
514.05
512.87
511.69
510.51
509.34
508.16
507.00
505.83
504.67
503.51
502.35



pH

6.600
6-691
6692
$6693
6.604
6.695
$2606
62697
6.608
6.609
6-610
6.611
6.612
6.613
6.614
6.615
64616
6.617
6.618
6.619
6.620
6.621
62622
6.623
6-624
6.625
62626
6-627
6.626
6.629
6630
6-631
62632
6.633
66634
62635
62636
6.637
6 0638
6.639
6.649
6.641
6-642
62643
66644
6.645
6846
6.647
6.648
6.649

[H+]
nEq/L
251.19
250.62
250.04
249.446
248.89
248.32
247.75
247.18
246.61
246.04
245.48
244.91
244.35
243.79
243.22
242.67
242.11
241.55
240.99
240.44
239.89
239.34
238.79
238.24
237.69
237614
236.60
236.05
235.51
234.97
234.43
233.89
233.35
232.81
232428
231.74
231.21
230.68
230.15
229.62
229.09
228.56
228.04
227.51
226.99
226.47
225.95
225443
224.91
224.39

pH

6.650
6.651
62652
6.653
6.654
6.655
6.656
6.657
6.658
6.659
62660
6.661
6.662
6.663
62664
62665
62666
6.667
6.668
6.669
6.670
6.671
6.672
6.673
6.674
62675
6.676
6.677
6.678
6.679
6.680
6.681
6.682
62683
62684
6.685
6.686
6.687
6.688
6.689
6.690
6.691
62692
62693
62694
62695
60696
6.697
6.698
62699

aca

pH values 6.600- 6.749

[H+]
nEq/L
223.88
223.36
222.85
222.34
221.82
221.31
220.80
220.30
219.79
219.28
218.78
218.28
217.78
217.27
216.77
216.28
215.78
215.28
214.79
214.29
213.80
213.31
212.82
212.33
211.84
211.35
210.87
210.38
209.90
209.42
208.93
208.45
207.97
207.50
207.02
206.54
206.07
205.59
205.12
204.65
204.18
203.71
203.24
202.77
202.31
201.84
201.38
200.91
200.45
199.99

pH

6.700
6.701
6.702
6.703
6.704
6.705
6.706
6.707
6.798
6.709
6.710
6.711
6.712
6.713
6.714
6.715
6.716
6.717
6.718
6.719
6.720
6.721
6.722
6.723
6.724
6.725
6.726
6.727
6.728
6.729
6.730
6.731
6.732
6.733
6.734
6.735
6.736
6.737
6.738
6.739
6.740
6e74L
6.742
6.743
6.744
6.745
6.746
6.747
6.748
66749

[H+]
nEq/L
199.53
199.07
198.61
198.16
197.70
197.25
196.79
196.34
195.89
195.44
194.99
194.54
194.09
193.65
193.20
192.76
192.31
191.87
191.43
190.99
190.55
190.11
189.67
189.24
188.80
188.37
187.94
187.50
187.07
186.64
186.21
185.78
185.36
184.93
184.51
184.08
183.66
183.24
182.81
182.39
181.97
181.56
181.14
180.72
180.31
179.89
179.48
179.06
178.65
178.24