Description
Class B burette 25 ml with PTFE key stopcock and Schellbach stripe is a volumetric glass instrument engineered for accurate liquid dispensing in laboratory titration work. It features a straight stopcock equipped with an NS-PTFE key together with a Schellbach strip that improves meniscus readability. The 25 ml capacity suits standard analytical procedures in chemical analysis, quality control and educational laboratories. Each unit weighs 0,094 kg net and is supplied in packs of 2 pc(s). These burettes from manufacturer Witeg offer dependable class B performance for routine volumetric tasks where the specified tolerance is appropriate. The PTFE key provides smooth, chemically resistant operation while the Schellbach design minimises reading errors during titrations. Ideal for research, teaching and industrial environments requiring reliable volume delivery with a PTFE-stopcock configuration, the instrument integrates easily into conventional titration assemblies and maintains the precision expected of class B laboratory glassware.
This article is part of Burettes, in Volumetric glassware.
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Questions about Burette cl-B 25 ml str.stopc. PTFE-plug Schellbach
What is this article?
Burette cl-B 25 ml str.stopc. PTFE-plug Schellbach is the article on this page. Luminix Health distributes Witeg 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?
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.

