PMP. Tall form, class A acc. to DIN 12681 and ISO 6706, conformity certified. Glass clear with red printed graduations and ring marks at the primary scale points. Hexagonal base, test certificate indicating lot number and year of production, also on the measuring cylinder. Thermal stress up to 121 °C (autoclaving) does not cause tolerance limits to be permanently exceeded. To preserve markings, do not clean at temperatures exceeding 60 °C.