Description
Volumetric flask, conformity certified, class A, with NS poly stopper, Boro 3.3 is a precision laboratory vessel for accurate volume measurement and preparation of standard solutions. This class A flask is conformity certified and produced in accordance with DIN EN ISO 1042. Nominal capacity is 20 ml; the neck carries a ground joint sleeve NS 10/19 that accepts the matching NS poly stopper supplied with the item. Brown inscriptions give clear, durable volume and identification markings on the flask body. Construction is in borosilicate glass type 3.3 as specified for this laboratory flask from manufacturer Hecht. The product is supplied in a pack of 2 pieces, convenient for parallel work or reserve stock. Class A volumetric flasks of this design are used for preparing standard solutions, performing accurate dilutions and supporting quantitative analytical procedures that require certified volumetric accuracy. The NS poly stopper and ground joint combination allows secure closure during mixing and short-term holding of prepared solutions. Laboratories operating under quality systems benefit from the conformity certification and the standardised dimensions defined by DIN EN ISO 1042. The 20 ml size is well suited to routine standard preparation and sample work-up in analytical laboratories.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Capacity: 20 ml
- Material: Boro 3.3
- Accuracy class: Class A
- Joint size: NS 10/19
- Stopper: 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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.