Description
Volumetric flask BLAUBRAND® ETERNA, class A, DE-M, 250 ml is a precision measuring vessel manufactured from borosilicate glass 3.3 with brown colouration. It features an NS 14/23 ground joint and is supplied complete with a polypropylene stopper. The flask conforms to DIN EN ISO 1042 and is delivered with an ISO batch certificate, ensuring reliable volumetric accuracy for quantitative laboratory work. With a nominal volume of 250 ml (0,25 l), this class A instrument supports exact preparation of standard solutions, dilutions and calibrations in analytical chemistry, quality control and research environments. The brown glass construction offers protection for light-sensitive media while the durable Boro 3.3 material provides excellent chemical resistance and thermal stability. Offered in a pack of 2 pieces from manufacturer Brand, the flask combines the established BLAUBRAND® ETERNA quality with DE-M conformity marking for everyday use in professional laboratories requiring high measurement confidence and reproducible results.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Nominal volume: 250 ml
- Material: Borosilicate glass 3.3
- Accuracy class: A
- Colour: Brown
- EAN: 4033378237415
- Technical Information Sheet:
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Questions about Vol. flask BLAUBRAND-ETERNA A DE-M, 250 ml, Boro 3.3, NS 14/23, PP-stopper
What is this article?
Vol. flask BLAUBRAND-ETERNA A DE-M, 250 ml, Boro 3.3, NS 14/23, PP-stopper is the article on this page. Luminix Health distributes Brand 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.