Description
Volumetric flask 20 ml class A with batch certificate is engineered for precise volumetric applications and features an NS 10/19 ground joint closed by a PE stopper in amber glass. Produced from borosilicate glass 3.3, the flask offers high chemical durability together with favourable thermal properties for everyday laboratory use. Amber glass shields light-sensitive contents, while white Diffico markings provide sharp contrast for accurate volume reading. Every flask carries a batch number and is accompanied by a batch certificate per original packaging, verifying class A conformity. Supplied in packs of 10 pieces from manufacturer Witeg, these volumetric flasks are well suited to the preparation of standard solutions, dilutions and quantitative analyses in analytical and research settings. The PE stopper ensures a reliable seal and convenient handling. Net weight is 0,022 kg, making the 20 ml format practical for small-volume certified work that requires both light protection and documented accuracy.
This article is part of Volumetric flasks, in Volumetric glassware.
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Questions about Volumetric flasks, 20 ml, A, CC, ST 10/19,
What is this article?
Volumetric flasks, 20 ml, A, CC, ST 10/19, is the article on this page. Luminix Health distributes Witeg 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.
How does ordering and shipping work?
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.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.