Description
Volumetric flask, conformity certified, class A, with NS poly stopper, Boro 3.3 is a precision measuring flask used to prepare solutions of exact volume in the laboratory. Constructed from Boro 3.3 glass, it is fitted with an NS poly stopper and marked with blue inscriptions that identify the calibrated capacity. The flask holds 50 ml and features a ground joint sleeve of NS 12/21 for secure stopper seating. It is conformity certified to class A and manufactured in accordance with DIN EN ISO 1042, the recognised standard for laboratory volumetric glassware. These attributes make the flask appropriate for analytical chemistry tasks such as preparing standard solutions, performing dilutions and supporting quantitative assays that demand class A volumetric accuracy. Offered in a pack of 2 pieces from manufacturer Hecht, the flask serves teaching laboratories, research groups and quality-control units that specify DIN EN ISO 1042 class A volumetric flasks with poly stoppers. Blue inscriptions remain easy to read during routine handling, while the NS 12/21 joint and matching poly stopper complete a practical assembly for everyday volumetric work with 50 ml batches.
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: Class A, conformity certified
- Joint size: NS 12/21
- Inscription: Blue
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Questions about Flask, volumetric class 'A’, clear, blue graduation, with plastic stopper, DIN
What is this article?
Flask, volumetric class 'A’, clear, blue 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.