Description
Volumetric flask, class A, with individual certificate, 20 ml, NS 10/19, Premium Line is a precision measuring vessel manufactured from high-quality borosilicate glass 3.3 and supplied with a PE stopper. It is designed according to ISO 1042, DIN 12664 and the United States Pharmacopeia (USP) and is adjusted to contain (TC, In). Class A precision produced to USP requirements exceeds the manufacturing tolerance defined by ISO 1042 alone. Legal-metrology conformity is shown by the official “DE-M (year)” symbol printed on each flask. Every vessel carries a unique number engraved in the glass and is accompanied by an individual calibration certificate stating the actual volume of that flask. With a nominal volume of 20 ml and ground joint NS 10/19, this Premium Line flask from manufacturer Labbox is intended for accurate solution preparation and volumetric work in analytical and quality-control laboratories. Supplied as 1 pc with a net weight of 0,055 kg, it supports certified class A practice where documented volume accuracy is essential.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Vol. flask class A w/ plastic stopper, individual certificate, 20 ml, mouth size
What is this article?
Vol. flask class A w/ plastic stopper, individual certificate, 20 ml, mouth size 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. 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.

