Choose cylinders with a Certificate of Graduation Accuracy or a NIST Calibration Report. Models with both Certificate of Graduation Accuracy and NIST Calibration Report feature fused-in serial numbers.

All support ISO 9000 requirements and are calibrated in accordance with ASTM E 542. Cylinders meet ASTM E 694 specifications and accuracy requirements of ASTM 1272. Each cylinder features an easy-to-read white scale and a molded base to decrease risk of accidentally knocking it over.