Description
Volumetric flask, conformity certified, class A, with NS poly stopper, Boro 3.3 is a precision laboratory vessel for accurate preparation and measurement of liquid volumes. This 50 ml flask is made from borosilicate glass 3.3, offering the chemical resistance and thermal stability required for everyday analytical work. It features a ground joint NS 14/23 and is supplied with a matching NS poly stopper for secure closure during mixing and short-term holding of solutions. Brown inscription provides durable, high-contrast marking of the nominal volume. The flask conforms to DIN EN ISO 1042 and meets class A volumetric tolerances, supporting quantitative analysis, standard-solution preparation and titration workflows where tight accuracy is essential. Conformity certification aids documentation in quality-controlled environments. Available as a pack of 2 pieces from manufacturer Hecht, these volumetric flasks suit research, quality-control and teaching laboratories that rely on reproducible class A glassware. The combination of Boro 3.3 construction, poly stopper and certified accuracy makes the item a practical choice for routine volumetric applications.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Capacity: 50 ml
- Material: Boro 3.3
- Accuracy class: A
- Ground joint: NS 14/23
- Stopper type: NS poly stopper
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Questions about Flask, volumetric class 'A’, clear, amber graduation, with plastic stopper, DIN
What is this article?
Flask, volumetric class 'A’, clear, amber graduation, with plastic stopper, DIN is the article on this page. Luminix Health distributes Hecht 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. Delivery across Europe, two to five days when in stock. 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.