Description
Burettes class AS 25 ml with straight stopcock and NS glass key are precision volumetric instruments manufactured from clear glass for accurate titration work. Each burette has a nominal capacity of 25 ml and a scale division of 0,05 ml, conforming to class AS accuracy requirements. The straight stopcock is fitted with an NS ground-glass key, providing reliable flow control without the need for additional sealing materials under normal laboratory conditions. Supplied as a pack of two pieces, the burettes are intended for quantitative analysis, standardisation procedures and educational titration experiments. Clear glass construction allows unobstructed observation of the meniscus and titrant level. This glassware from manufacturer Witeg is suitable for aqueous and many organic titrants commonly encountered in analytical chemistry. The combination of class AS tolerance, fine graduation and durable NS glass stopcock supports reproducible results in pharmaceutical, chemical and academic laboratories where volumetric precision is essential.
This article is part of Burettes, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Capacity: 25 ml
- Accuracy class: AS
- Graduation: 0,05 ml
- Stopcock: straight with NS glass key
- Material: clear glass
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Questions about Burettes, class-AS, straight stopcock,
What is this article?
Burettes, class-AS, straight stopcock, is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Burettes, inside Volumetric glassware, in Matériel de laboratoire.
A burette delivers a measured volume through a stopcock, which is how a titration is read. Class A and class AS state the tolerance. The stopcock, glass or PTFE, and the volume of the burette are the choices. A dirty bore changes the delivered volume.
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 Burettes. The catalogue is Matériel de laboratoire.
Shelves beside this one are Volumetric flasks, Measuring cylinders, 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.