Description
Volumetric flask 250 ml class A with batch certificate is intended for precise volume measurement and solution preparation in analytical and quality-control laboratories. The flask is fitted with an NS 14/23 ground joint and a hexagonal hollow stopper for reliable sealing and easy manipulation. It is produced from borosilicate glass 3.3 in Diffico brown, offering excellent chemical durability together with reduced light transmission for light-sensitive media. Each flask is marked with a batch number, and a batch certificate accompanies every original packaging, confirming class A conformity. The 250 ml capacity supports routine preparation of standard solutions, dilutions and volumetric assays that demand documented accuracy. Net weight is 0,094 kg, providing a stable yet manageable vessel for everyday bench work. These instruments from manufacturer Witeg serve pharmaceutical, chemical, environmental and research applications where certified volumetric glassware and batch traceability are essential. The Diffico brown finish helps protect contents from photochemical effects while the borosilicate 3.3 construction ensures long-term mechanical and thermal performance under normal laboratory conditions.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 10 pc(s)
- Capacity: 250 ml
- Accuracy class: Class A
- Ground joint: NS 14/23
- Stopper: Hexagonal hollow stopper
- Material: Borosilicate glass 3.3
- Technical Information Sheet:
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Questions about Volumetric flasks, 250 ml, A, CC, ST 14/23,
What is this article?
Volumetric flasks, 250 ml, A, CC, ST 14/23, 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.