Beschrijving
Volumetric flask 250 ml class A with NS 14/23 joint and PE stopper is a precision measuring vessel made from amber borosilicate glass 3.3. This class A flask is conformity certified and carries white Diffico marking for clear volume indication. The amber glass construction shields light-sensitive samples and reagents from unwanted photochemical reactions, making it suitable for analytical and pharmaceutical applications. Each flask from manufacturer Witeg is supplied with a batch number and a batch certificate accompanying every original packaging unit. The PE stopper ensures a tight seal at the ground joint NS 14/23, supporting accurate preparation of standard solutions and volumetric dilutions. With a net weight of 0,128 kg the flask combines chemical durability and thermal stability characteristic of borosilicate glass 3.3. Packaged in units of 10 pieces, these volumetric flasks meet the demands of routine laboratory work where certified accuracy, light protection and reliable documentation are required. The class A tolerance supports quantitative analysis, titration workflows and the preparation of reference solutions in chemistry and quality-control environments.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 10 pc(s)
- Volume: 250 ml
- Accuracy class: A
- Joint size: NS 14/23
- Stopper: PE stopper
- Material: Borosilicate glass 3.3
Recent bekeken
Misschien vind je dit ook leuk
Browse related categories
Category
Sub-category
Catalogue
Brand
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 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.