Description
Volumetric flask class A KB wide-neck 25 ml with PE stopper, brown graduated and NS 12/21 joint is a precision laboratory vessel made from DURAN® borosilicate glass 3.3. It offers a nominal volume of 25 ml with a tolerance of 0,06 ml and a height of 110 mm in accordance with DIN EN ISO 1042. The wide-neck design facilitates easier filling and cleaning, while the brown glass protects light-sensitive contents and the brown graduations ensure accurate meniscus reading. Equipped with a polyethylene stopper and standard ground joint NS 12/21, the flask provides secure closure for volumetric work. Each piece carries a conformity declaration according to DIN 12600 together with dated batch identification for full documentation. Batch, individual or DAkkS calibration certificates can be ordered additionally. Ideal for preparing standard solutions, dilutions and quantitative analyses in chemical, pharmaceutical and environmental laboratories, this class A flask delivers reliable accuracy. Manufactured by Hirschmann, the robust borosilicate construction supports repeated use under typical laboratory conditions. Supplied in packs of 2 pieces for convenient stock management.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Storage temperature: +5 - +40°C
- Nominal volume: 25 ml
- Accuracy class: A
- Tolerance: 0,06 ml
- Ground joint: NS 12/21
- Technical Information Sheet:
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Questions about VOLUMET. FLASK A CC WN 25 ML, POLYST. AMBER GRAD. NS12/21
What is this article?
VOLUMET. FLASK A CC WN 25 ML, POLYST. AMBER 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.
How does ordering and shipping work?
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.
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.