PYREX® Vista™ Economy Graduated Cylinders are calibrated “to contain” (TC). They are supplied in two parts - a strong, accurate glass graduate and a detachable, sturdy plastic base which absorbs impacts and reduces breakage. Tolerances are ±5% of total at any point. By removing the base, the graduate can be conveniently stacked. Bumper guards are supplied with 25ml through 100ml inclusive. The 10ml has a funnel top for careful pouring.