Beschreibung
Burette stopcock for 50 ml with PTFE plug, straight is a precision accessory for volumetric work on 50 ml burettes. Manufactured from DURAN tubing in borosilicate glass 3.3, the straight stopcock features an NS 12,5 joint and a 1,6 mm bore according to DIN 12541, ensuring reliable fit and dimensional consistency. The PTFE plug affords smooth actuation, secure sealing and chemical resistance across typical titration media. Net weight is 0,034 kg. This component from manufacturer Witeg is purpose-built for 50 ml burettes that specify a straight PTFE-plug arrangement. It supports controlled reagent delivery in analytical chemistry, quality assurance and teaching laboratories, facilitating accurate endpoint observation. DURAN® borosilicate glass 3.3 supplies the thermal shock resistance and chemical inertness expected of high-quality laboratory glassware, while the PTFE Küken limits sticking and eases cleaning between series of determinations. The stopcock is suited to aqueous and many organic reagents used in classical wet-chemical procedures and can be installed as original equipment or as a replacement part on matching 50 ml burette systems requiring a straight flow path.
This article is part of Burettes, in Volumetric glassware.
Key features
- Pack size: 1 pc
- Design: Straight burette stopcock
- Joint size: NS 12,5
- Bore diameter: 1,6 mm
- Plug material: PTFE
- Material: Borosilicate glass 3.3 (DURAN®)
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Questions about stopcock f. burettes 50 ml w PTFE-plug
What is this article?
stopcock f. burettes 50 ml w PTFE-plug is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Burettes, inside Volumetric glassware, in Laborbedarf.
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 Laborbedarf.
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.