Description
DURAN® volumetric flask, Class A, with individual certificate and CoC and blue print is a clear borosilicate glass 3.3 flask for high-precision volume work. With a nominal volume of 2 l and ground joint NS 29/32, it is adjusted to contain (“In”) at a reference temperature of +20 °C and meets the tight Class A tolerances of ISO 1042. An individual serial number is permanently laser-marked in the base and recorded on the accompanying certificate, which states the measured volume, measurement uncertainty and issue date. The blue printed scale and ring mark are fired on for lasting visibility, supporting accurate preparation and dilution of standard solutions, volumetric analysis and multi-component mixing. Supplied with an ergonomic polyethylene stopper for quick, secure opening and closing, the flask comes from manufacturer Duran/DWK Life Sciences. Pack size is 2 pc(s). To preserve volumetric stability, do not heat these glassware items above +250 °C in drying ovens or sterilizers.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Nominal volume: 2 l
- Accuracy class: A
- Material: Borosilicate glass 3.3
- Joint size: NS 29/32
- EAN: 4032051306691
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Questions about DURAN® Volumetric Flask, Class A, individual certificate and CoC, blue print
What is this article?
DURAN® Volumetric Flask, Class A, individual certificate and CoC, blue print is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Volumetric flasks, inside Volumetric glassware, in Labware.
A volumetric flask is calibrated to contain one volume at a reference temperature, with a single mark on a narrow neck. Class A is the tight tolerance. It is not a storage bottle and it is not for heating. The stopper is part of the calibrated article.
Volumetric glassware is glass that has been calibrated to contain or to deliver one stated volume at a reference temperature. That calibration is the whole point. Class A and class AS have a tighter tolerance than class B. A volumetric flask contains. A pipette and a burette deliver. A measuring cylinder is the coarser reading, used when the volume is not the result. The classes sit under ISO laboratory glassware. The chain back to the unit of volume is the work of the BIPM and of NIST.
Which category should I open next?
The category is Volumetric glassware. The sub-category is Volumetric flasks. The catalogue is Labware.
Shelves beside this one are Measuring cylinders, Burettes, Mixing cylinders and Volumetric accessories & certificates.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

