Description
Volumetric flask 50 ml Class A KB with NS 12/21 ground joint and hexagonal hollow stopper supports precise volumetric work in analytical and quality-control laboratories. Manufactured from borosilicate glass 3.3 in Diffico brown, the flask provides excellent chemical resistance and thermal stability for preparing standard solutions, performing dilutions and conducting quantitative analyses. Class A accuracy and conformity certification deliver the reliability required for reproducible results. The NS 12/21 joint accommodates the hexagonal hollow stopper, forming a secure seal that minimises evaporation and sample contamination. Every flask is identified by a batch number and accompanied by a batch certificate included with each original packaging, guaranteeing full traceability. Supplied in packs of 10 pieces from manufacturer Witeg, these vessels are well suited to research, pharmaceutical and routine laboratory settings that depend on certified glassware. The durable lightweight construction maintains calibration integrity under normal laboratory handling and cleaning. Ideal for applications demanding exact 50 ml volume determination and documented quality assurance.
This article is part of Volumetric flasks, in Volumetric glassware.
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Questions about Volumetric flasks, 50 ml, A, CC, ST 12/21,
What is this article?
Volumetric flasks, 50 ml, A, CC, ST 12/21, is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Fioles jaugées, inside Verrerie volumétrique, in Matériel de laboratoire.
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 Verrerie volumétrique. The sub-category is Fioles jaugées. The catalogue is Matériel de laboratoire.
Shelves beside this one are Éprouvettes graduées, Burettes, Éprouvettes de mélange and Accessoires volumétriques & certificats.
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. 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.