Description
Volumetric flask class A KB wide-neck 5 ml with hollow glass stopper, blue graduation and NS 10/19 ground joint is designed for convenient filling and precise small-volume work. Made from borosilicate glass 3.3 and carrying the DURAN® trademark, this flask features a nominal volume of 5 ml, a scale division of 40 µl and a height of 70 mm. It meets the requirements of DIN EN ISO 1042 and includes a declaration of conformity to DIN 12600 with dated batch identification. The wider neck and NS 10/19 joint facilitate easier introduction of solids or viscous liquids, while the blue graduation ensures clear meniscus reading. A hollow glass stopper provides a secure closure. Hirschmann offers the flask with the option of a complimentary batch calibration certificate as well as individual or DAkkS certificates when higher documentation levels are needed. The class A accuracy and robust construction make it well suited to analytical chemistry, pharmaceutical preparation and quality-control laboratories performing micro-scale dilutions and standard solutions. Compact size and wide-neck design combine practical handling with reliable volumetric performance.
This article is part of Volumetric flasks, in Volumetric glassware.
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Questions about VOLUMET. FLASK A CC WN 5 ML, GL.ST. BLUE GRAD. NS10/19
What is this article?
VOLUMET. FLASK A CC WN 5 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.
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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.

