Description
Straight valve stopcocks with PTFE spindle for 50 ml burettes are clear-glass laboratory fittings for precise liquid control in titration and volumetric work. Made from DURAN® borosilicate glass 3.3, the straight valve body offers chemical durability together with good visibility of the flow path. The PTFE spindle supports smooth actuation and reliable sealing during repeated use on compatible 50 ml burettes. These stopcocks sit in the burette accessories range and serve as replacement or original components in analytical chemistry, quality control, and teaching laboratories. Offered as a single-piece unit from manufacturer Hirschmann, the item suits environments where glassware integrity and an inert spindle material are required. Net weight is 0,047 kg. The clear glass construction aids visual inspection of the valve channel, while PTFE reduces sticking and chemical attack compared with traditional ground-glass keys. Use this straight valve stopcock wherever a durable, chemically resistant shut-off element is needed on matching 50 ml burette systems.
This article is part of Laboratory glass bottles, in Bottles & containers.
Key features
- Pack size: 1 pc
- Storage temperature: +5 – +40 °C
- Material: Borosilicate glass 3.3
- Registered trademark: DURAN®
- Spindle material: PTFE
- EAN: 4049338018833
- Technical Information Sheet:
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about STR. VALVE STOPCOCK 50 ML, PTFE SPINDLE, CLEAR GLASS
What is this article?
STR. VALVE STOPCOCK 50 ML, PTFE SPINDLE, CLEAR GLASS is the article on this page. Luminix Health distributes Hirschmann for laboratory use. It sits in Laboratory glass bottles, inside Bottles & containers, in Labware.
A laboratory glass bottle is borosilicate or soda-lime, with a stated capacity and a neck for a screw cap or a ground stopper. Glass is the choice when the liquid attacks a plastic, or when the bottle will be heated or autoclaved.
A laboratory bottle is a closed container with a stated volume and a neck that takes a cap, a stopper or a dispenser. Borosilicate glass is the choice when the liquid is a solvent, or when the bottle will be heated or autoclaved. Polyethylene and polypropylene are the choice when the bottle must not shatter, or when hydrofluoric acid would attack glass. A narrow mouth pours. A wide mouth is for powders and for reaching the bottom. Laboratory ware of this kind is indexed under ISO laboratory glassware. Traceable volume sits with the BIPM and NIST Physical Measurement.
Which category should I open next?
The category is Bottles & containers. The sub-category is Laboratory glass bottles. The catalogue is Labware.
Shelves beside this one are Plastic bottles (narrow & wide mouth), Sample containers & jars, Canisters & jerrycans, Wash bottles and Bottle accessories (pouring rings, dispensers, caps).
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.