These Nessler tubes are ideal for color comparison and feature cap style stoppers that do not need to be removed to take readings.
Features & Benefits
Shadowless bottom of each tube transmits undistorted light
Standard Taper cap style stopper
45325A is supplied in a matched set of 6?
45325B is supplied in a matched set of 12
Graduated ring scale of any of the tubes within a matched 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 50-100 mL size is designed from ASTM D1209
Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements