Description
Volumetric flask 500 ml, class A, KB, with NS 19/26 ground joint and hexagonal hollow stopper is precision volumetric glassware made from borosilicate glass 3.3. These Diffico brown flasks are conformity certified and delivered with a batch number; a batch certificate is enclosed with each original packaging. The class A rating supports accurate volume adjustment for standard solutions and quantitative laboratory work. The NS 19/26 joint pairs with the matching NS hexagonal hollow stopper to provide a secure closure during preparation and short-term holding of solutions. Manufactured from chemically resistant borosilicate glass 3.3, the amber-brown Diffico finish offers the mechanical and thermal stability expected of laboratory volumetric flasks. Pack size is 10 pc(s), with a net weight of 0,17 kg. Available from manufacturer Witeg, every flask carries batch identification to aid traceability. The combination of certified class A accuracy, documented batch conformity, NS 19/26 joint and hexagonal hollow stopper makes this 500 ml vessel suitable for analytical and quality-control laboratories that require reliable volumetric glassware with clear batch documentation.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 10 pc(s)
- Nominal volume: 500 ml
- Accuracy class: A, conformity certified
- Joint size: NS 19/26
- Stopper: Hexagonal hollow stopper
- Material: Borosilicate glass 3.3
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Questions about Volumetric flasks, 500 ml, A, CC, ST 19/26,
What is this article?
Volumetric flasks, 500 ml, A, CC, ST 19/26, 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.