Description
Volumetric flasks, class A, DURAN®, 250 ml are laboratory glass vessels intended for precise solution make-up and volumetric analysis. Fabricated in amber DURAN® glass and fitted with a polyethylene (PE) stopper on joint 14/23, they provide class A volumetric definition together with reduced light transmission for photosensitive reagents and standards. The 250 ml nominal capacity is well suited to medium-scale dilutions, standard preparations and titration-related workflows. Units are offered in packs of 2 pc(s) at a stated weight of 0,260 kg, supporting efficient bench replenishment in analytical, pharmaceutical and educational laboratories. These flasks from manufacturer Hirschmann follow established volumetric-flask design with amber glass, PE stopper and ground joint 14/23 for reliable closure during mixing and storage. They serve routine volumetric tasks where a fixed 250 ml mark, class A tolerance class and light-protective glass are needed without additional accessories beyond the supplied PE stopper.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Product type: Volumetric flasks, class A
- Volume: 250 ml
- Material: DURAN® amber glass
- Stopper: PE-stopper
- Joint: 14/23
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Volumetric flasks, cl. A, DURAN®, 250 ml, PE-stopper, joint 14/23, amber glass
What is this article?
Volumetric flasks, cl. A, DURAN®, 250 ml, PE-stopper, joint 14/23, amber glass is the article on this page. Luminix Health distributes Hirschmann 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.