Shadowless bottom of each tube transmits undistorted light

·         Standard Taper cap style stopper

·         Replacement cap is 15182

·         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 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 req