·         Stopper made from linear, high density polyethylene

·         “TC” appears on each cylinder and indicates the cylinder is calibrated to contain

·         The enlarged top of the stopper protects the neck if the cylinder is knocked over

·         Scale is durable white ceramic enamel

·         Heights given below do not include the stopper

·         Replacement stopper is 28160R

·         Designed from ASTM Specification E1272, Style II, Class B requirements

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