Description
Drain cock for aspirator bottle NS 19 with 4 mm bore is a ground-glass stopcock accessory designed for controlled drainage from laboratory aspirator and clarification bottles. It comprises a core joint NS 19/26 and a plug (Küken) NS 18,8 with a 4 mm bore, allowing precise gravity-fed discharge of liquids in filtration, settling and sample-transfer setups. The ground interfaces provide a reliable seal on matching NS 19 bottle necks commonly used in chemical and analytical laboratories. Net weight is 0,086 kg. This component from manufacturer Witeg is supplied as a single piece and integrates directly into standard aspirator-bottle assemblies for routine liquid handling. It supports clarification workflows, solvent recovery and general laboratory draining tasks where regulated outflow and a tight glass-to-glass connection are required. The defined bore diameter ensures consistent flow behaviour during emptying operations on the bench.
This article is part of Canisters & jerrycans, in Bottles & containers.
Key features
- Pack size: 1 pc
- Type: Drain cock for aspirator bottles
- Core joint: NS 19/26
- Plug (Küken): NS 18,8
- Bore diameter: 4 mm
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Questions about Taps for bottles ST 19
What is this article?
Taps for bottles ST 19 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. 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.