AFDC 9  (282) CD3 
CD3 
                                                                                            
                                          
DRAFT  TANZANIA STANDARD  
 
Common salt and cattle licks – Specification  
  
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TANZANIA BUREAU OF STANDARDS  
 
                                                                                                          AFDC 9  (282) CD3 
                                                                                                        
Common salt and cattle licks – Specification  
                                                  
 
0 FOREWORD  
 
This Tanzania standard is prepared to assist control quality and safety of common salt and 
cattle licks produced or trad ed in the country for animal consumption . 
 
In preparation of this  Tanzania standard considerable as sistance was derived from IS 
920:1972 , Specification for common salt and cattle licks for animal consumption  
published  by the Bureau of Indian Standards.  
  
In reporting the results of a test  or analysis made in accordance with this standard, if 
the final value, observed or calculated, is to be rounded off, it shall be done in 
accordance with TZS 4 (see clause 2).  
 
1.0   SCOPE  
 
This Tanzania standard specifies  requirements, methods of sa mpling and test for 
common salt and cattle licks  for animal consumption . 
  
2.0   NORMATIVE REFERENCES  
 
For the purpose of this Tanzania standard, the following references shall apply. For 
dated references, only the edition cited  applies. For undated references, the latest edition of 
the referenced document (including any amendments) applies.  
 
TZS 4 – Rounding off numerical values  
TZS 76 – General method for determination of Arsenic silver diethyldithiocar bamate 
photometric  method  
TZS 109 – Food Processing units – code of hygiene – General.  
TZS 268 – General atomic absorption spectrophotometric method for determinati on of 
lead in food stuffs  
TZS 538  – Labelling of pre -packaged foods — General requirements  
TZS 821 – Animal f eeds and  feeding stuffs – Preparation of test samples.  
TZS 2477 -1 – Animal feeding  stuffs - Determination of water -soluble chlorides content  
TZS 2478  – Animal feeding  stuffs – Determination of moisture and other volatile 
matter conten t 
ISO 2479 – Sodium c hloride  for industrial use — Determination of matter insoluble in 
water or in acid and preparation of principal solutions for other determinations  
TZS 2487  – Animal fee ding stuffs - Determination of the contents of calcium, copper, 
iron, magnesium, manganese, pota ssium, sodium and zinc - Method using atomic 
absorption spectrometry  
TZS 2488  – Animal feeding  stuffs – Sampling  
 
 
 
 
 
                                                                                                           AFDC 9  (282) CD3 
 3.0   TERMS AND DEFINITIONS  
 
For the purpose of this standard, the following terms and definitions shall apply:  
 
4.0   REQUIREMENTS  
 
4.1 General requirements  
 
4.1.1 Common salt  for animal consumption shall be in the f orm of a crystalline solid; white or 
pale-pink or light grey in colour, free from visible contamination of clay, grit or extraneous 
adulterants and impurities. Common salt for animal consumption shall not contain an y 
harmful constituents except other salts , such as calcium carbonate, sodium carbonate, 
potassium chlorid e, magnesium sulphate and magnesium chloride which are soluble in water.   
 
4.1.2 Cattle licks shall preferably b e in the form of blocks or bricks, and shall be free from 
visible contamination with clay, grit and extraneous adulterants or impurities. The li cks shall 
be sufficiently hard and strong so as not to crumble during handling.  
 
4.1.3 The block may have a hol e at one end so as to facilitate their ‘pegging’ to keep them 
above ground level  or be provided with embedded rope for the purpose of hanging.  
 
4.1.4 Sizes – unless otherwise agreed to between the purchaser and the supplier, cattle licks 
shall be manufact ured in the following sizes:  
a) 2 kg block  
b) 5 kg block  
c) 10 kg brick, and  
d) 100 g pet l icks. 
 
4.1.5 Types  – Cattle licks may be either plain or mineral ized. For proper differentiation the 
mineralized licks shall be suitably colored.  
 
4.2 Specific requirements  
Common salt and cattle licks shall also conform to the requirements detailed in Table 1a and 
1b. 
Table 1 a: Requirements  for common salt for animal  consumption  
S/No  Parameter  Requirements  Method of test  
1)  Moisture, %, m/m, Max  6 ANNEX A  
2) Chloride cont ent (as NaCl ), % 
m/m, min  
 
 94 TZS 2477 -1 
3) Water insoluble matter , % 
m/m, max  1 ISO 2479  
NOTE:  These requirements are on moisture – free basis  
 
 
Table 1 b: Requirements  for cattle licks, plain and mineralized  
S/No.  Parameter  Requirements  (mg/kg , max ) Method of test  
Plain licks  Mineralized 
licks  
1) Moisture, %, m/m, Max  6 6 ANNEX A                                                                                                            AFDC 9  (282) CD3 
 2) Chloride cont ent (as 
NaCl), %, m/m, , Min  94 94 TZS 2477 -1  
3) Iron, percent by mass, 
Min - 0.13 TZS 248 7 
4) Iodine, percent by 
mass, Min  - 0.003  TZS 76  
5) Copper, percent by 
mass, Max  - 0.035   TZS 248 7  
6) Manganese, percent by 
mass, Max  - 0.20 TZS 248 7 
7) Cobalt, percent by 
mass, Min  - 0.001  TZS 248 7 
NOTE: These requirements are on moisture – free basis  
 
 
5.0 CONTAMINANTS  
The products covered by this s tandard shall comply with the maximum limits for heavy metals 
specified in Table 2. 
 
Table 2: Heavy m etal contaminants  
S/No.  Heavy metal  Maximum l imits  
(mg/kg , max)  Method of test  
1) Mercury (Hg)  0.1 ICP/AAS  
2) Lead (Pb)  15 TZS 268  
3) Arsenic (As)  10 TZS 76 
4) Cadmium (Cd)  10  ICP/AAS   
 
 
6.0 HYGIENE  
 
The product shall be prepared under strict hyg ienic conditions according to TZS 109 (see 
clause 2).   
 
7.0 SAMPLING AND TESTS  
 
7.1 Sampling  
Sampling of the product covered under this standard shall be don e according to TZS  2488  
and test samples sh all be pre pared in accordance with  TZS 821 (see clause 2 ). 
 
7.2 Tests  
Testing of this product shall be done according to test methods prescribed in Table s 1 and  2 
(see clause 2).  
 
 
 
 
 
                                                                                                           AFDC 9  (282) CD3 
 8.0 PAC KING, MARKING AND LABELL ING 
 
8.1 Pack ing  
8.1.1  The material shall b e packed i n moisture –proof containers which are of suffi cient 
strength and sufficiently sealed so as to withstand handling without tearing, bursting or falling 
open during normal handling and transportation.  
 
8.1.2 The container  shall be sound, clean and free from causal agents of infectious diseases 
and paras ites.  
  
8.2 Marking  and labellin g 
Common salt and cattle licks for each container shall be marked to display the following 
information:  
 
a) Name of the produc t; 
b) Name and physical address of the manufacturer /packe r; 
c) Country of origin ; 
d) Batch or code number;  
e) Date of manufacture ;  
f) Net content in metric units;  
g) Expiry date;  
h) Directions for use and storage conditions;  
 
8.3 The container may also be marked with TBS Cert ification Mark.  
NOTE  – The TBS Standards Mark of Quali ty may be used by the manufacturers 
only under  licence from TBS. Particulars of conditions under which the licences 
are granted may be obtained from TBS.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
                                                                                                           AFDC 9  (282) CD3 
  
 
 
 
ANNEX A  
(Normative ) 
 
 
DETERMI NATION OF MOISTURE CONTENT - SALT  
 
A.2.1 Procedure  
A.2.1.1 Grind rapidly the salt sample as received (say 100g) where relevant, as in the case of 
iodated  
coarse salt, in an agate mortar to approximate size of 2.8 mm sieve, but do not actually sie ve. 
The sa lt 
which shall be in the form of powder shall be kept in an air -tight container.  
A.2.1.2 Weigh accurately about 20 g of the salt in a weighing bottle (about 30 ml capacity); 
preferably wide  mouth squat type: previously dried and weighed. Dry in a n oven at 140 °C to 
150 °C for at least four hours,  cool in a desiccator and weigh  
 
A.2.2 Calculation  
Moisture, per cent by mass =  100 (Mi -Ms) 
 
where  
M, = the initial mass in grams of the salt taken for the testing  
Ms = the final mass in grams of the sal t taken fo r the test