Description
Stopper with straight tube NS 19/26 is a laboratory glassware component featuring a standard ground joint and an integral straight tube outlet. Designed for NS 19/26 conical joints, it serves as a simple closure or transition piece that permits direct connection of tubing or further glassware via the straight tube. The unit weighs 0,014 kg net and is supplied as a single piece for modular apparatus construction. This stopper from manufacturer Witeg is classified among transition pieces and ground-joint adapters used throughout chemical and analytical laboratories. The straight-tube geometry supports unobstructed gas or liquid transfer and is particularly useful in setups where a stopcock or angled outlet is unnecessary. Compatible with matching NS 19/26 flasks, condensers and receivers, the fitting enables quick assembly of distillation, reaction or sampling trains. Its compact form and standardized taper make it a practical choice for research, quality-control and educational environments requiring reliable glass-to-glass or glass-to-tubing connections.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Stopper with straight tube
- Joint size: NS 19/26
- Outlet: Straight tube
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Questions about Suction tube, straight, cone ST 19/26
What is this article?
Suction tube, straight, cone ST 19/26 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Ground-joint glass stoppers, inside Stoppers, caps & closures, in Labware.
A ground-glass stopper matches a ground neck of a stated joint size. A 14/23 stopper does not seal a 29/32 neck. The stopper is part of the flask's seal, and a chip on the grind is a leak.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Ground-joint glass stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone stoppers, Lids & seals and Closures (other).
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.