Description
Volumetric flask class A KB 20 ml with PE stopper, blue graduated scale and NS 12/21 ground joint is a DURAN® precision flask manufactured from borosilicate glass 3.3. The 20 ml nominal capacity is held to a class A tolerance of ±0,06 ml and the vessel complies with DIN EN ISO 1042. A conformity declaration according to DIN 12600 and a dated batch identification accompany each flask, ensuring full traceability for regulated laboratory environments. Height is 105 mm, and the blue graduation remains clearly legible against the transparent glass body. The polyethylene stopper provides a reliable seal for preparation and short-term holding of standard solutions. Offered by manufacturer Hirschmann, the flask can be supplemented with a free batch calibration certificate, an individual calibration certificate or a DAkkS certificate when additional documentation is required. Chemical resistance and thermal performance of borosilicate 3.3 glass make the item well suited to analytical chemistry, titration workflows and quality-control volumetric work. Supplied in packs of two pieces, the set delivers matched class A vessels ready for immediate laboratory deployment.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Storage temperature: +5 - +40°C
- Material: Borosilicate glass 3.3
- Nominal volume: 20 ml
- Tolerance: ±0,06 ml
- EAN: 4049338008810
- Technical Information Sheet:
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Questions about VOLUMET. FLASK A CC 20 ML, POLYST. BLUE GRAD. NS12/21
What is this article?
VOLUMET. FLASK A CC 20 ML, POLYST. BLUE GRAD. NS12/21 is the article on this page. Luminix Health distributes Hirschmann 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.
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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. 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.