Description
Volumetric flask, class A, trapezoidal, 50 ml, NS 12/21, Premium Line is intended for accurate preparation of standard solutions and controlled dilutions in chemical analysis. Fabricated from high-quality borosilicate glass 3.3, the flask combines durability with good resistance to common laboratory reagents and temperature changes during everyday use. Its trapezoidal profile aids bench stability and mixing, while the NS 12/21 ground neck is fitted with a PE stopper to limit evaporation and contamination between steps. Class A volumetric tolerance supports reliable quantitative work at the 50 ml mark, making the vessel suitable for titrimetric standards, buffer preparation, and routine QC dilutions. Supplied as 2 pieces per pack from manufacturer Labbox, the Premium Line delivery includes a batch certificate available via the manufacturer website. Clear glass walls allow straightforward meniscus observation under typical laboratory lighting. This mid-range capacity balances sample economy with practical handling for teaching laboratories, research benches, and production-support analytics that require repeatable volumetric glassware.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Product type: Class A trapezoidal volumetric flask
- Capacity: 50 ml
- Joint size: NS 12/21
- Material: Borosilicate glass 3.3 with PE stopper
- EAN: 8434868116535
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Volumetric flask class A, trapezoidal, 50 ml, mouth size 12/21, Prem. Line, 2 pc
What is this article?
Volumetric flask class A, trapezoidal, 50 ml, mouth size 12/21, Prem. Line, 2 pc is the article on this page. Luminix Health distributes Labbox 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. 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.