6630-00-526-6777 (6630-00-626-6777)
NSN 6630-00-526-6777 (NIIN 00-526-6777) is a color comparator in Federal Supply Class 6630, Chemical Analysis Instruments — an instrument used to determine hydrogen ion concentration, residual chlorine content. Manufacturer part number 6630-00-626-6777 (J & H Berge, Inc., CAGE 25518); also referenced as 21429-7 (Central Scientific Co).
NIIN assigned January 1963; DEMIL A (none required); export Schedule B 9027.50.5000.