Description
Volumetric flask, Class A, 20 ml with NS 10/19 joint is a precision measuring vessel manufactured from borosilicate glass LBG 3.3. It is designed in accordance with ISO 1042 and DIN 12664 and calibrated to contain (TC, In), making it suitable for preparing standard solutions, dilutions and other accurate volumetric work in analytical and quality-control laboratories. Each flask is fitted with a PE stopper for secure closure during mixing and short-term storage. Supplied in a pack of 2 pieces from manufacturer Labbox, the Class A accuracy rating supports tight volumetric tolerances required for quantitative procedures. Borosilicate glass 3.3 offers the chemical resistance and thermal stability expected in routine laboratory use. A batch certificate is available as a free download. With a nominal volume of 20 ml and a net weight of 0,050 kg, this compact flask is well suited to applications that demand small, precisely measured volumes while remaining easy to handle on the bench.
This article is part of Volumetric flasks, in Volumetric glassware.
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Questions about Volumetric flask grade A with plastic stopper, 20ml, mouth size 10/19, LBG 3.3,
What is this article?
Volumetric flask grade A with plastic stopper, 20ml, mouth size 10/19, LBG 3.3, is the article on this page. Luminix Health distributes Labbox 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.

