Description
Test tubes 17 x 220 mm NS 14/23 serve as ungraduated laboratory vessels for holding, mixing and heating small to medium sample volumes. These round-bottom tubes are supplied with NS-PE stoppers and produced from DURAN tubing, delivering dependable chemical resistance and thermal stability for routine laboratory operations. With dimensions of 17 mm diameter by 220 mm length and an NS 14/23 ground joint, they integrate easily with standard jointed glassware. Packaged in units of 10 pieces, they are suitable for analytical chemistry, biological work and teaching laboratories. Manufactured by Witeg, the tubes provide clear visual inspection of contents together with robust mechanical strength. The round-bottom form supports even heating on hotplates or in water baths, while the polyethylene stoppers create a secure closure that helps prevent evaporation and contamination. Each tube weighs 0,029 kg net, remaining practical to manipulate during sample preparation, qualitative testing or intermediate reaction stages where graduated markings are unnecessary.
This article is part of Test tubes, in Tubes & vials.
Key features
- Pack size: 10 pc(s)
- Dimensions: 17 x 220 mm
- Joint size: NS 14/23
- Stopper type: NS-PE stopper
- Bottom shape: Round bottom
- Graduation: Ungraduated
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Questions about Test tubes 17 x 220mm ST 14/23
What is this article?
Test tubes 17 x 220mm ST 14/23 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Test tubes, inside Tubes & vials, in Labware.
A test tube is the open cylindrical vessel for a small liquid, in borosilicate glass or in plastic. Rimmed and rimless mouths differ. The size is diameter by length. It is not graduated for a result, and a glass tube that will be centrifuged has a force limit.
A tube holds a small sample upright. A test tube is the open glass or plastic cylinder. A centrifuge tube is conical so a pellet forms at the tip, and it is rated for a centrifugal force the rotor will actually reach. A vial is a small closed bottle, often for a sample that will sit in an instrument. NMR tubes are a special case: the glass has to be uniform or the spectrum is the tube, not the sample. Laboratory ware is listed under ISO laboratory glassware.
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The category is Tubes & vials. The sub-category is Test tubes. The catalogue is Labware.
Shelves beside this one are Centrifuge tubes (conical), Sample vials & NMR tubes and Tube & vial accessories.
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