Glass-clear tall-form cylinders are constructed of polymethylpentene (PMP) and have ring molded graduations at major increments for excellent readability. The hexagonal base resists rolling. Calibrated "to contain" Class A per DIN 12681 and ISO 6706. Autoclaving at 121°C will not cause permanent exceeding of tolerqance limits.
Certified cylinders are imprinted with lot number and year and supplied certificate includes mean test value and lot.