PYREX® Red Single Metric Scale Graduated Cylinders are calibrated "to contain." The scale and figures are durable white enamel, which stand out clearly against the red color-band on these Lifetime Red Cylinders. The 10mL size has a funnel top. Bumper guards are supplied with 100mL through 2000mL inclusive. The 100mL size is made in accordance with ASTM E-133 and E-1272 and is used in ASTM tests D-86 and D-216.