DURAN® Volumetric Flask, Class A, amber, batch certificate, 20 mL

with printed graduation mark and ergonomic polyethylene stopper
  • Complies with ISO 1042
  • Made from borosilicate glass 3.3
  • 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.
  • 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 white print
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 blue print for clear glass products and a white print for amber versions. Volumetric flasks with a batch number and accuracy Class A are supplied with a batch certificate. This certificate documents the mean value obtained from measuring the batch in question, the standard deviation and the day of issue. The batch certificates can also be retrieved online. The batch number consists of four digits. The first two numbers specify the production year, and the following two numbers specify the batch, e.g.: 18.01. 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.

Specifications

Specifications
Diameter d (mm) 39
Capacity (mL) 20
Diameter (mm) 39
Neck ID (mm) 9 +/- 1
Marking Area The marking area is a printed ceramic area on laboratory glassware for marking / identification using a wax pencil. Also called marking field, white marking spot or marking square.
Material BORO 3.3, PE
Boro 3.3 Borosilicate glass 3.3 has a very good chemical resistance, virtual inert behavior, a high maximum usage temperature, high light transparency and minimal thermal expansion. Borosilicate glass 3.3 has a linear coefficient of expansion of 3.3 × 10−6 K−1 at
Height (mm) 110
Stopper Size 10/19
Tolerance (mL) +/- 0.04
Autoclavable Yes
Retrace Code This is a lot number printed on the product during the manufacturing process used for identification of the production unit, the production work order and for traceability of the materials used.
Quantity 2
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 blue print for clear glass products and a white print for amber versions. Volumetric flasks with a batch number and accuracy Class A are supplied with a batch certificate. This certificate documents the mean value obtained from measuring the batch in question, the standard deviation and the day of issue. The batch certificates can also be retrieved online. The batch number consists of four digits. The first two numbers specify the production year, and the following two numbers specify the batch, e.g.: 18.01. 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.

Specifications

Specifications
Diameter d (mm) 39
Capacity (mL) 20
Diameter (mm) 39
Neck ID (mm) 9 +/- 1
Marking Area The marking area is a printed ceramic area on laboratory glassware for marking / identification using a wax pencil. Also called marking field, white marking spot or marking square.
Material BORO 3.3, PE
Boro 3.3 Borosilicate glass 3.3 has a very good chemical resistance, virtual inert behavior, a high maximum usage temperature, high light transparency and minimal thermal expansion. Borosilicate glass 3.3 has a linear coefficient of expansion of 3.3 × 10−6 K−1 at
Height (mm) 110
Stopper Size 10/19
Tolerance (mL) +/- 0.04
Autoclavable Yes
Retrace Code This is a lot number printed on the product during the manufacturing process used for identification of the production unit, the production work order and for traceability of the materials used.
Quantity 2

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