DURAN® volumetric flasks are used for the accurate measurement of specific quantities of liquids. They are volumetric analysis aids in quantitative laboratory work. These volumetric flasks are certified batchwise.– complies with ISO 1042 – UV protection due to external colouration; very durable and chemically resistant amber colour – The only external application of the colour ensures that internal surfaces have standard DURAN® glass properties – Calibration based on the poured in volume (“In”) at a + 20 °C reference temperature – Outstanding precision during volumetric measurement and high-quality process stability – Thanks to the exact processing and precisely calibrated scales, they permit the highly accurate determination and measurements of volume – Supplied with ergonomic polyethylene stopper for easy and safe tightening or removal – The volume content tolerances conform to accuracy Class A – Fired-on, highly durable white print – With printed ring mark for better visibility DURAN® volumetric flasks are used for the accurate measurement of specific quantities of liquids. They are volumetric analysis aids in quantitative laboratory work. These volumetric flasks are certified batchwise.– complies with ISO 1042 – UV protection due to external colouration; very durable and chemically resistant amber colour – The only external application of the colour ensures that internal surfaces have standard DURAN® glass properties – Calibration based on the poured in volume (“In”) at a + 20 °C reference temperature – Outstanding precision during volumetric measurement and high-quality process stability – Thanks to the exact processing and precisely calibrated scales, they permit the highly accurate determination and measurements of volume – Supplied with ergonomic polyethylene stopper for easy and safe tightening or removal – The volume content tolerances conform to accuracy Class A – Fired-on, highly durable white print – With printed ring mark for better visibility