Description
Burettes, class AS, with a straight valve cock are precision glass volumetric instruments for accurate liquid dispensing in titration and related analytical workflows. This 50 ml model is made from DURAN® brown glass with white graduations, so the scale stands out clearly on the amber body during volume delivery and reading. Class AS designation suits demanding quantitative tasks in chemical analysis, quality control and training laboratories where larger titration volumes still require controlled, reproducible delivery. The straight valve stopcock includes a PTFE spindle for smooth, resistant flow adjustment at the tip. Brown glass supports handling of light-sensitive titrants while the instrument is in use or parked on a stand between determinations. Pack size is 2 pc(s), with a unit weight of 0,375 kg, supporting dual setups or spare capacity in active liquid-handling areas. These glass burettes from manufacturer Hirschmann integrate with standard titration apparatus and glass burette practice. White graduation markings stay legible against the brown glass for confident endpoint work and volume documentation. They meet laboratory needs for class AS burettes with a straight valve cock and PTFE spindle at 50 ml.
This article is part of Burettes, in Volumetric glassware.
Key features
- Pack size: 2 pc(s)
- Class: AS
- Capacity: 50 ml
- Material: DURAN® brown glass
- Graduation: White
- Stopcock: Straight valve cock with PTFE spindle
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Questions about Burette class AS With a straight valve stopcock and a PTFE spindle, 50 ml
What is this article?
Burette class AS With a straight valve stopcock and a PTFE spindle, 50 ml is the article on this page. Luminix Health distributes Hirschmann for laboratory use. It sits in Burettes, inside Volumetric glassware, in Labware.
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 Labware.
Shelves beside this one are Volumetric flasks, Measuring cylinders, Mixing cylinders and Volumetric accessories & certificates.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.