Description
Class A volumetric flasks in DURAN® transparent glass with a 25 ml capacity are designed for precise volume definition in analytical and preparative laboratory practice. The wide-neck configuration with ground joint 12/21 facilitates filling, cleaning, and sample transfer, including materials that are less free-flowing. Transparent glass allows accurate meniscus reading when bringing solutions to the calibration mark. These flasks serve volumetric analysis, standard solution preparation, dilutions, and quantitative workflows in research, quality control, and educational laboratories. Delivered as 2 pc(s) from manufacturer Hirschmann, the pack weighs 0,086 kg and is practical for bench storage and daily use. The 25 ml volume is a common working size for intermediate standards and assay preparations that require a known final volume. DURAN® transparent glass provides a sturdy vessel body for regular laboratory handling. Class A accuracy supports procedures that demand higher volumetric reliability. Joint 12/21 on the wide neck pairs with matching stoppers and accessories while preserving the calibrated capacity needed for reproducible results.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Capacity: 25 ml
- Accuracy class: Class A
- Material: DURAN® transparent glass
- Neck type: Wide neck
- Joint size: 12/21
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Questions about Volumetric flasks, cl. A, DURAN®, 25 ml, joint 12/21, wide neck, transp. glass
What is this article?
Volumetric flasks, cl. A, DURAN®, 25 ml, joint 12/21, wide neck, transp. 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.
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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.