APHA Nessler Color Comparison Tubes
Shadowless bottom transmits undistorted light. There are no dark spots when the tube is filled with liquid and viewed from the top using a light source beneath the tube. Narrower and taller with a much longer scale length than 45310 series. The 50mL size is specifically mentioned by the American Public Health Association in Standard Methods for the Examination of Water and Waste Water. Rings and legend are durable white ceramic enamel. Rings coincide with specific volumes of liquid. Designed from Federal Specification NNN-T-175, Type 1, Class 2 requirements.
- 45315 series is unmatched
- 45315A series is supplied in a matched set of 6
- 45315B series is supplied in a matched set of 12
Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I Class A requirements.