Description
Volumetric flask in borosilicate glass 3.3 with blue graduation is a precision laboratory vessel for accurate preparation and dilution of standard solutions. Conformity certified and supplied without stopper, this 50 ml flask carries a ground joint NS 12/21 ready for a matching stopper when sealed work is required. The borosilicate glass 3.3 body provides high chemical resistance and good thermal stability for everyday analytical tasks in chemistry, quality control and research. Blue graduation markings remain clearly legible under normal laboratory lighting and support reliable volume reading. Offered as a single piece from manufacturer Hecht, the flask suits volumetric work where certified conformity is expected. Typical uses include preparation of calibration standards, titrants and stock solutions in pharmaceutical, environmental and teaching laboratories. The durable glass construction withstands routine cleaning procedures associated with borosilicate 3.3 laboratory ware while maintaining dimensional stability for repeated measurements.
This article is part of Volumetric flasks, in Volumetric glassware.
Key features
- Pack size: 1 pc(s)
- Material: Borosilicate glass 3.3
- Capacity: 50 ml
- Joint size: NS 12/21
- Graduation: Blue
- Certification: Conformity certified
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Questions about Volumetric flasks, borosilicate glass 3.3 conformity certified, without stopper
What is this article?
Volumetric flasks, borosilicate glass 3.3 conformity certified, without stopper is the article on this page. Luminix Health distributes Hecht 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.

