Description
Volumetric flask 25 ml class A KB with NS 10/19 ground joint and PE stopper is a precision measuring vessel for accurate volumetric work in analytical and research laboratories. Produced from borosilicate glass 3.3, the Diffico brown flask combines chemical resistance with good thermal stability for everyday solution preparation and quantitative analysis. Class A accuracy and conformity certification support reliable volume determination, while the polyethylene stopper ensures a secure seal during mixing and storage. Each flask carries a batch number and is accompanied by a batch certificate supplied with every original packaging unit. The NS 10/19 joint offers standard compatibility with common laboratory glassware. Offered in packs of 10 pieces from manufacturer Witeg, these flasks suit dilution series, standard solutions and routine titrimetric applications where certified precision is required. Net weight is 0,022 kg per flask, making the set practical for bench use and storage.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 10 pc(s)
- Accuracy class: A
- Joint size: NS 10/19
- Material: Borosilicate glass 3.3
- Stopper: PE stopper
- Colour: Diffico brown
- Technical Information Sheet:
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Questions about Volumetric flask 25 ml A CC ST 10/19 PE
What is this article?
Volumetric flask 25 ml A CC ST 10/19 PE 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.