These Nessler tubes are ideal for color comparison
Shadowless bottom of each tube transmits undistorted light
Rings and legend are durable white ceramic enamel which correspond with specific volumes of liquid
CSX45315 series is unmatched
CSX45315A series is supplied in a matched set of 6
CSX45315B 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
Product must be used in compliance with the intended use statement listed on the product or its accompanying product information.