Corning® Pyrex® graduated cylinders are calibrated "to contain." The single scale and figures are durable white enamel, which stand out clearly against the red color-band on these cylinders. This provides clear, accurate measurements for delivering or containing liquids. 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. For the same cylinder, but with a built-in glass bumper guard, see Cat.No. 1-3046 series.