·         Heavy-duty KIMAX® tube with a graduated scale and a PTFE Standard Taper stopper

·         Calibrated to contain

·         With top finish to accept a Standard Taper stopper

·         Scale and legend are printed in permanent red stain on the 13 mL size and permanent brown stain on 50 mL size

·         Marking spot is sandblasted on

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