Description
Volumetric flask, trapezoidal shape is a laboratory glass vessel for preparing and diluting solutions to a defined volume in volumetric analysis. This 25 ml flask is fitted with a glass stopper and a standard ground joint 10/19, and carries blue graduations for reading the nominal volume mark. The trapezoidal body supports stable standing and convenient handling during filling, mixing and temperature equilibration on the bench. Pack size is 2 pc(s), with a unit weight of 0,077 kg, making the set practical for routine analytical and teaching laboratories. Blue graduation marks aid visual confirmation when bringing solutions to volume. This volumetric flask from manufacturer Hirschmann suits preparation of standard solutions, titrants and sample dilutions used in quantitative wet chemistry. The glass stopper with ground joint helps limit evaporation and airborne contamination while prepared solutions are held or transferred. It fits naturally into glassware assemblies for calibration work, quality-control assays and educational practicals where clear 25 ml volumetric flasks with trapezoidal geometry are required.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Capacity: 25 ml
- Shape: trapezoidal
- Stopper: glass stopper
- Ground joint: 10/19
- Graduations: blue
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Questions about Volumetric flask, trapezoidal shape, w. glass stop., st.gr.joint 10/19, 25ml
What is this article?
Volumetric flask, trapezoidal shape, w. glass stop., st.gr.joint 10/19, 25ml 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.
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.

