PFA. Tolerances class A acc. to DIN EN ISO 1042. High transparency. Ring mark individually calibrated to 'In'. Supplied with screw caps, provide safety from outside contamination. Outstanding chemical resistance, can be used with strong oxidants, highly concentrated acids and bases, hydrocarbons and ketones. High thermal stability, from - 200 to + 260 °C. With laser-engraved lot number and batch certificate. Exposure to temperatures up to 121 °C (autoclaving) will not cause permanent exceeding to tolerance limits. To preserve the ring mark, do not clean at temperatures exceeding 60 °C. Also available with DAkkS calibration certificate or individual quality certificate.