APHA Nessler Color Comparisons Tubes

Description:
Shadowless bottom of each tube transmits undistorted light

·         Rings and legend are durable white ceramic enamel which correspond with specific volumes of liquid

·         45315 series is unmatched

·         45315A series is supplied in a matched set of 6

·         45315B series is supplied in a matched set of 12

·         Graduated ring scale of any of the tubes within a set will not vary from that of any other tube within the set by more than 1.5 mm for the 50 mL and 2.0 mm for the 100 mL sizes

·         The 50 mL size is specifically mentioned by the American Public Health Association in Standard Methods for the Examination of Water and Waste Water

·         Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I Class A requirements