DESIGNATION NUMBER : RFCA-1278-033

IDENTIFICATION :     "Horiba Models AQM-10, AQM-11, and AQM-12 Ambient
CO Monitoring Systems", operated on the 0 - 50 ppm range, with a
response time setting of 15.5 seconds, with or without any of the
following options:

                     a.  AIC-101 Automatic Indication Corrector
                     b.  VIT-3 Non-Isolated Current Output
                     c.  ISO-2 and DCS-3 Isolated Current Output


SOURCE :             Horiba Instruments, Inc.
                     1021 Duryea Avenue
                     Irvine Industrial Complex
                     Irvine, CA 92714

 MANUAL
   OR      :         Automatic
AUTOMATIC

REFERENCE
   OR      :         Reference
EQUIVALENT

FEDERAL VOLUME       REGISTER PAGE        NOTICE DATE
--------------       -------------        -----------
     43                   58429             12/14/78