Description
Volumetric flask BLAUBRAND® ETERNA Class A is a precision measuring flask manufactured from borosilicate glass 3.3 for accurate dilution and preparation of standard solutions. This 20 ml model is brown graduated for high-contrast reading and incorporates a ground joint NS 10/19 closed with a polypropylene stopper. Class A accuracy with DE-M marking meets demanding analytical requirements, and each flask is accompanied by an ISO individual certificate confirming conformity. The durable Boro 3.3 body offers the chemical resistance and thermal stability expected in everyday laboratory volumetric work with aqueous solutions and many organic solvents. From manufacturer Brand, the BLAUBRAND® ETERNA range supports reproducible results in quality control, research and educational laboratories. Compact 20 ml capacity suits intermediate dilutions and small-batch standard preparation where traceable Class A glassware is specified. Supplied as one piece, the flask integrates directly into calibrated volumetric procedures without additional accessories beyond the included PP stopper.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 1 pc
- Nominal volume: 20 ml
- Material: Boro 3.3
- Accuracy: Class A, DE-M
- Design: Brown graduated, NS 10/19
- EAN: 4033378328427
- Technical Information Sheet:
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Questions about Vol. flask, BLAUBRAND-ETERNA, class A, 20 ml, with NS 10/19 PP stopper, DE-M
What is this article?
Vol. flask, BLAUBRAND-ETERNA, class A, 20 ml, with NS 10/19 PP stopper, DE-M 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.