Description
Drain cock for aspirator bottle NS 29 with 6,3 mm bore provides controlled outlet functionality for laboratory aspirator and settling bottles fitted with larger ground joints. The unit combines a cone joint NS 29/32 with a stopcock plug NS 21,5, delivering a secure, interchangeable connection to matching bottle necks. Its 6,3 mm bore enables measured drainage of liquids during clarification, phase separation or bulk transfer operations while limiting excessive flow. Offered as one piece and weighing 0,095 kg net, the cock is straightforward to install and replace within standard glassware setups. This accessory from manufacturer Witeg is intended for analytical, preparative and educational laboratories that standardise on NS joint systems. Consistent ground-joint geometry supports reliable sealing under normal laboratory conditions and repeated use. Suitable for chemistry, biotechnology and quality-control benches where accurate liquid discharge from aspirator bottles is required without compromising joint compatibility or handling safety.
This article is part of Canisters & jerrycans, in Bottles & containers.
Key features
- Pack size: 1 pc
- Product type: Drain cock for aspirator bottle
- Cone joint: NS 29/32
- Stopcock plug: NS 21,5
- Bore diameter: 6,3 mm
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Questions about Taps for bottles ST 29
What is this article?
Taps for bottles ST 29 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Canisters & jerrycans, inside Bottles & containers, in Labware.
A canister or jerrycan holds litres, not millilitres, and it is shaped to be carried and to pour. The material has to survive the liquid for the whole time the can sits in the store.
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 Canisters & jerrycans. The catalogue is Labware.
Shelves beside this one are Laboratory glass bottles, Plastic bottles (narrow & wide mouth), Sample containers & jars, 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. 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.
