Description
Volumetric flask class A KB 25 ml with hollow glass stopper and blue graduation is a high-precision laboratory vessel made of DURAN® borosilicate glass 3.3. It provides a nominal volume of 25 ml with a tolerance of ±0,04 ml, an NS 10/19 ground joint and a height of 110 mm. Intended for accurate preparation of volumetric solutions and quantitative analytical work, the flask features a distinct blue graduation line that supports clear and reproducible meniscus observation. Every flask is accompanied by a conformity declaration in accordance with DIN 12600, carries dated batch identification and meets the requirements of DIN EN ISO 1042. The Class A rating guarantees tight volumetric tolerances required in analytical chemistry, pharmaceutical laboratories and quality-control environments. Additional batch, single-unit or DAkkS calibration certificates are available for this Hirschmann flask. Durable borosilicate glass 3.3 construction delivers outstanding chemical resistance and thermal performance for everyday and specialised laboratory use.
This article is part of Volumetric flasks, in Volumetric glassware.
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Questions about VOLUMET. FLASK A CC 25 ML, GL.ST. BLUE GRAD. NS10/19
What is this article?
VOLUMET. FLASK A CC 25 ML, GL.ST. BLUE GRAD. NS10/19 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.

