Description
DURAN® volumetric flask, class A, USP <31> is a precision laboratory vessel for high-accuracy volumetric analysis and preparation of small-volume standard solutions. This clear-glass model has a nominal capacity of 5 ml, a standard taper joint NS 10/19, and is supplied with a PE stopper together with a USP certificate. Class A performance with USP <31> alignment suits demanding analytical, pharmaceutical and quality-control workflows that require tight volumetric tolerances. Offered in a pack of 2 pc(s) from manufacturer DWK Life Sciences, the flask supports quantitative dilution, standard preparation and calibrated transfer steps in research and regulated laboratory environments. The NS 10/19 joint accepts the included PE stopper for secure closure during equilibration and storage of prepared solutions. At a weight of 0,050 kg per unit, the compact flask is easy to handle on the analytical bench while remaining stable during filling. It forms part of the DURAN® volumetric-flask range used for volumetric analysis wherever a certified 5 ml class A flask with USP documentation is specified.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Type: Volumetric flask
- Brand: DURAN®
- Accuracy class: Class A, USP <31>
- Capacity: 5 ml
- Joint: NS 10/19
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Questions about Volumetric flasks DURAN® class A, USP<31>, 5 ml, 10/19
What is this article?
Volumetric flasks DURAN® class A, USP<31>, 5 ml, 10/19 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.
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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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.