Beschrijving
Volumetric flask, 20 ml, Class A with batch certificate, is equipped with an NS 10/19 ground joint and hexagonal hollow stopper. Produced from borosilicate glass 3.3 in Diffico brown, it provides reliable volume measurement with light-protective amber glass. Every flask is marked with a batch number and accompanied by a batch certificate per original packaging. Class A accuracy and conformity certification are standard. Supplied in packs of 10 pc(s) from manufacturer Witeg, the flask weighs 0,025 kg net. The hexagonal hollow stopper matches the NS joint for a stable seal, while the Diffico brown borosilicate body supports analytical and preparative laboratory procedures that demand defined volumetric precision and batch documentation. Traceability remains linked to the original packaging unit for quality-controlled environments.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 10 pc(s)
- Capacity: 20 ml
- Accuracy class: A
- Joint size: NS 10/19
- Stopper type: Hexagonal hollow stopper
- Material: Borosilicate glass 3.3
- Technical Information Sheet:
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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 Maatkolven, inside Volumetrisch glaswerk, in Labmateriaal.
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 Volumetrisch glaswerk. The sub-category is Maatkolven. The catalogue is Labmateriaal.
Shelves beside this one are Maatcilinders, Buretten, Mengcilinders and Volumetrische accessoires & certificaten.
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.