DURAN® Volumetric Flask, Class A, individual certificate

Volumetric flasks are available in two different accuracy Classes: Class A and Class B. The two Classes differ in the accuracy of measurement with Class A being the highest accuracy, and Class B is approximately half that of Class A. The volumetric flasks with accuracy Class A have a blue print for clear glass products and a white print for amber versions. Volumetric flasks which are numbered individually, are supplied with an individual certificate. The individual number is permanently laser-etched onto the base of the volumetric flask and is entered on the corresponding certificate. The volume measured for the corresponding volumetric flask, the measurement uncertainty and the day of issue are documented on this certificate. The individual number is a consecutive number and comprises three letters and a four digit number, for example: AAA-0001.
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DURAN® Volumetric Flask, Class A, individual certificate

with printed graduation mark and ergonomic polyethylene stopper
    • Complies with ISO 1042
    • Made from borosilicate glass 3.3
    • 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
    • Calibration based on the poured-in volume (“In”) at a + 20 °C reference temperature
    • The volume content tolerances conform to accuracy Class A
    • With printed graduation mark for better visibility
    • Fired-on, highly durable blueprint

Product Overview

Volumetric flasks are available in two different accuracy Classes: Class A and Class B. The two Classes differ in the accuracy of measurement with Class A being the highest accuracy, and Class B is approximately half that of Class A. The volumetric flasks with accuracy Class A have a blueprint for clear glass products and a white print for amber versions. Volumetric flasks which are numbered individually, are supplied with an individual certificate. The individual number is permanently laser-etched onto the base of the volumetric flask and is entered on the corresponding certificate. The volume measured for the corresponding volumetric flask, the measurement uncertainty, and the day of issue are documented on this certificate. The individual number is a consecutive number and comprises three letters and a four-digit number, for example, AAA-0001.
Catalog No Capacity (mL) Diameter d (mm) Height h (mm) Stopper Size
246790151 1 13 65 7/16
246790254 2 17 70 7/16
246790957 5 W 22 70 10/19
246791053 10 W 27 90 10/19
246791259 20 39 110 10/19
246791456 25 40 110 10/19
246791756 50 50 140 12/21
246792452 100 60 170 12/21
246792555 100 60 170 14/23
246793251 200 75 210 14/23
246793654 250 80 220 14/23
246794453 500 100 260 19/26
246795458 1000 125 300 24/29
246795552 1000 W 125 300 29/32
246796351 2000 160 370 29/32
246797356 5000 215 475 34/35