Beschrijving
DURAN® volumetric flask Class B with white print and ergonomic polyethylene stopper is a precision laboratory vessel for accurate liquid volume work. This 20 ml flask is produced from borosilicate glass 3.3 and conforms to ISO 1042. Accuracy class B provides defined volumetric tolerances approximately twice those of class A, supported by a clear white printed scale and ring mark that remain permanently fired into the glass for long-term readability. The flask is calibrated to contain (In) at the +20 °C reference temperature and is delivered with an ergonomic polyethylene stopper that allows fast, secure opening and closing during routine handling. Precise manufacturing delivers high process stability for reliable volume determination and dispensing. These DURAN® flasks from manufacturer Duran/DWK Life Sciences are well suited for preparing and storing standard solutions, measuring liquid quantities, diluting solutions, mixing multiple components, and performing volumetric analysis or titrimetric work. To preserve dimensional stability and service life, the glassware should not be heated above +250 °C in drying cabinets or sterilizers. The combination of robust material, clear white markings and practical stopper makes the flask a dependable choice for everyday analytical tasks.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 1 pc
- Accuracy class: B
- Nominal volume: 20 ml
- Material: Borosilicate glass 3.3
- Ground joint: NS 10/19
- EAN: 4032051306738
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Questions about DURAN® Volumetric Flask, Class B, white print, with ergonomic polyethylene stopp
What is this article?
DURAN® Volumetric Flask, Class B, white print, with ergonomic polyethylene stopp is the article on this page. Luminix Health distributes DWK Life Sciences for laboratory use. It sits in Maatkolven, inside Volumetrisch glaswerk, in Labmateriaal.
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 Volumetrisch glaswerk. The sub-category is Maatkolven. The catalogue is Labmateriaal.
Shelves beside this one are Maatcilinders, Buretten, Mengcilinders and Volumetrische accessoires & certificaten.
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.
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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.