Description
Volumetric flask with plastic stopper NS 12/21, amber, class B, 50 ml is a laboratory measuring flask for preparing and diluting solutions to a defined volume. The amber (brown) glass body helps shield light-sensitive contents during volumetric work, while the plastic stopper seals the NS 12/21 ground joint for mixing and short-term holding of the filled flask. Rated class B, this 50 ml Messkolben supports routine analytical tasks where class B volumetric tolerance is appropriate. Each pack contains 10 pieces, suited to teaching laboratories, quality-control benches and general chemistry workflows that require multiple flasks of the same nominal volume. The flasks come from manufacturer Dinkelberg and are listed under laboratory materials, with origin in the Czech Republic. Clear volume marking at 50 ml and the standardised NS 12/21 joint make the items straightforward to integrate with common laboratory stoppers and glassware sets. Use them for buffer preparation, standard solutions and sample dilutions in everyday lab practice where amber glass and a plastic stopper are preferred.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 10 pcs
- Product type: Volumetric flask
- Nominal volume: 50 ml
- Ground joint: NS 12/21
- Stopper: Plastic stopper
- Glass colour: Amber
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Flask, volumetric with plastic stopper NS 12/21, brown, Class B, 50ml, 10/PK
What is this article?
Flask, volumetric with plastic stopper NS 12/21, brown, Class B, 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.
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.
