Description
Volumetric flasks, class A, DURAN® are precision glass vessels for accurate preparation and dilution of standard solutions in volumetric analysis. This trapezoid model is fitted with a standard ground joint and offers a nominal capacity of 25 ml, supporting reliable volumetric work where class A tolerance is required. The DURAN® glass body provides the chemical resistance and thermal stability expected in routine laboratory glassware for aqueous and many organic media. Supplied as a pack of two pieces, the set is practical for parallel preparations or reserve stock at the bench. Each flask has a stated unit weight of 0,070 kg, reflecting a compact format suited to analytical balances and crowded fume hoods. The trapezoid profile aids stable standing during filling, mixing and temperature equilibration. These flasks from manufacturer Hirschmann integrate cleanly into existing volumetric glassware inventories used for titrimetry, standardisation and quantitative sample preparation. Clear class A marking and the ground joint interface support stoppering and transfer steps without compromising calibrated volume. Ideal for quality-control, teaching and research laboratories that rely on reproducible volumetric flasks for day-to-day analytical workflows.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Product type: Volumetric flask, class A
- Glass type: DURAN®
- Shape: Trapezoid
- Joint: Standard ground joint
- Capacity: 25 ml
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Questions about Volumetric flasks, cl. A, DURAN®, trapezoid, with stand. gr. joint, 25 ml
What is this article?
Volumetric flasks, cl. A, DURAN®, trapezoid, with stand. gr. joint, 25 ml 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.
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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.