Description
Volumetric flask BLAUBRAND® ETERNA Class A is a precision measuring flask made from borosilicate glass 3.3 for accurate preparation and dilution of solutions in analytical laboratories. This 5 ml wide-neck model carries brown graduations for clear volume reading and is fitted with an NS 10/19 ground joint complete with a polypropylene stopper. Class A accuracy together with DE-M conformity marking and an ISO individual certificate support metrologically controlled volumetric work. The robust Boro 3.3 glass offers high chemical resistance and thermal stability for everyday laboratory use. Wide-neck geometry eases filling, sample transfer and cleaning compared with narrow-neck designs. Supplied as a single piece from manufacturer Brand, the BLAUBRAND® ETERNA series is intended for quantitative analysis, standard solution preparation and quality-control procedures where calibrated glassware is essential. Brown graduation markings enhance contrast against pale liquids, while the PP stopper seals the flask during mixing and short-term holding of prepared solutions. Ideal for routine and research applications requiring reliable Class A volumetric performance in teaching, R&D and QC environments.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 1 pc
- Capacity: 5 ml
- Material: Boro 3.3
- Accuracy class: Class A, DE-M
- Graduation: Brown graduated
- EAN: 4033378328397
- Technical Information Sheet:
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Questions about Vol. flask, BLAUBRAND-ETERNA, class A, 5 ml w, with NS 10/19 PP stopper, DE-M
What is this article?
Vol. flask, BLAUBRAND-ETERNA, class A, 5 ml w, 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.