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

·         Round base to fit baths in which this cylinder is generally used

·         Pour spout

·         Scale is durable white ceramic enamel

·         Ref: ASTM Method D1401

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