Description
Volumetric flask 50 ml A KB NS 12/21 OST is a high-precision measuring flask designed for accurate volumetric determinations in the laboratory. Manufactured from borosilicate glass 3.3, it provides excellent chemical resistance and thermal properties essential for demanding analytical procedures. This class A flask is conformity certified and features an NS 12/21 ground joint for secure connections. It is supplied without PE stopper in Diffico-brown finish. Each flask carries a batch number, and a batch certificate is included with every original packaging to ensure full traceability. The 50 ml nominal capacity with precise markings supports preparation of standard solutions, dilutions and quantitative analyses where class A accuracy is required. Supplied in packs of 10 pieces, these flasks from manufacturer Witeg are well suited for analytical chemistry, pharmaceutical quality control and research environments. The robust construction ensures long service life under standard laboratory conditions while maintaining calibration integrity and measurement reliability over repeated use cycles in daily workflows.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 10 pc(s)
- Capacity: 50 ml
- Accuracy class: A
- Joint size: NS 12/21
- Material: Borosilicate glass 3.3
- Colour: Diffico-brown
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Questions about Volumetric flask 50 ml A CC ST 12/21 without
What is this article?
Volumetric flask 50 ml A CC ST 12/21 without 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.