NMR-rør

All LABSOLUTE® clear and amber volumetric flasks with accuracy class A comply with the DIN EN ISO 1042 standard. They are made of high-quality borosilicate glass 3.3 and calibrated to "In" (20 °C). All volumetric flasks are supplied with suitable stoppers made of glass or PE. A batch-specific certificate of conformity can be supplied on request.

With the exception of items 7691020, 7691022 & 7691034, the volumetric flasks have a scribed ring mark.