Kimble 45220-100 KIMAX® 100mL Goetz Graduated Centrifuge Tube with #16 Stopper is used for the determination of small quantities of solids in large volumes of liquids. Calibrated to contain. Stem is graduated in 0.01 mL to 0.2 mL and the body has graduations at 25, 50, and 100 mL. Recommended for the determination of free water and sediment in diesel and other distillate fuels, as a pass-fail indication of product quality (ASTM D2709). Durable black ceramic enamel scale. (Do not centrifuge with stopper in tube) Replacement stopper is 41900R.