A-A-53140 Revision A, January 25, 1988
COMPARATOR SET, COLOR (FREE RESIDUAL CHLORINE AND PH DETERMINATION)
Includes all amendments and changes through Cancellation Notice 1, June 12, 2009
Additional Comments: CNCL NO S/S
The General Services Administration has authorized the use of this commercial item description.
This commercial item description covers an indicator kit for use in performing pH and free residual chlorine determinations of drinking water in the field.