A precision graduated cylinder calibrated “to deliver” and supplied with an individual serial number. Includes a Certificate of Identification and Capacity, traceable to NIST standards. All sizes conform to Class A requirements as specified in ASTM E-695 and NBS Circular 601. The 10 ml size has a funnel-shaped opening for easy filling. Graduations are white. Bumper guards are supplied with 25 ml through 2000 ml inclusive. (ASTM E-542, E-1272)