Description
Trapezoidal volumetric flask 25 ml class A with NS 10/19 ground joint and PE stopper is a precision measuring vessel made from borosilicate glass 3.3. Conformity-certified and finished in Diffico blue, it supports accurate preparation of standard solutions, dilutions and volumetric work in analytical and quality-control laboratories. The trapezoidal body improves bench stability compared with conventional designs while the polyethylene stopper seals the NS 10/19 joint securely. Each flask from manufacturer Witeg is marked with a batch number and supplied together with a batch certificate in the original packaging, providing clear traceability for regulated environments. Offered as a single piece with a net weight of 0,023 kg, the flask combines the chemical resistance and thermal durability of borosilicate glass 3.3 with class A volumetric accuracy. It is well suited for routine wet-chemistry workflows that demand reliable volume definition and long service life under typical laboratory conditions.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 1 pc
- Capacity: 25 ml
- Accuracy class: A
- Joint size: NS 10/19
- Stopper material: PE
- Material: Borosilicate glass 3.3
- Technical Information Sheet:
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Questions about Trapezoidal volumetric flasks 25 ml A CC ST 10/19
What is this article?
Trapezoidal volumetric flasks 25 ml A CC ST 10/19 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.