Description
Volumetric flask with glass stopper NS 12/21, clear, Class A, 50 ml is a precision laboratory vessel for preparing and diluting solutions to an exact nominal volume. The clear glass body is paired with a glass stopper on a standard ground joint NS 12/21, supporting secure closure during mixing and short-term holding of prepared liquids. Class A designation indicates the higher accuracy grade used for quantitative volumetric work in analytical and quality-control settings. Offered as a pack of 10 pieces from manufacturer Dinkelberg, the 50 ml capacity suits routine make-up of standards, reagents and sample dilutions in chemistry, biochemistry and teaching laboratories. The clear construction aids meniscus reading and visual checks of solution homogeneity. The NS 12/21 glass stopper helps limit evaporation and airborne contamination between preparation and use. Country of origin is the Czech Republic. These flasks integrate into standard laboratory workflows for volumetric analysis, serial dilution and reproducible liquid measurement wherever Class A volumetric glassware is specified.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 10 pcs
- Product type: Volumetric flask with glass stopper
- Capacity: 50 ml
- Joint size: NS 12/21
- Accuracy class: Class A
- Appearance: Clear
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Questions about Flask, volumetric with Glass stopper NS 12/21, clear, Class A, 50ml, 10/PK
What is this article?
Flask, volumetric with Glass stopper NS 12/21, clear, Class A, 50ml, 10/PK is the article on this page. Luminix Health distributes Dinkelberg 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?
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. Delivery across Europe, two to five days when in stock. 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.