Description
Ungraduated test tubes 17x155 mm NS14/23 are laboratory reagent tubes manufactured from DURAN tubing and equipped with NS-PE stoppers of joint size NS 14/23. Each tube features an outer diameter of 17 mm and an overall height of 155 mm, together with a short pointed conical bottom of 22 mm height. Without graduation marks, these vessels are well suited to sample collection, reaction chemistry, heating steps and short-term storage in research, quality-control and teaching laboratories. The DURAN glass construction delivers the chemical durability and thermal performance characteristic of borosilicate laboratory glassware. The NS 14/23 polyethylene stopper ensures a secure closure that is compatible with standard ground-joint laboratory fittings. Offered as a single piece weighing 0,024 kg net from manufacturer Witeg, the tubes provide a practical format for procedures that benefit from a longer working length while retaining a compact diameter. Their conical base aids mixing and observation, making them a reliable choice for everyday ungraduated reaction and sample-tube applications.
This article is part of Test tubes, in Tubes & vials.
Key features
- Pack size: 1 pc
- Material: DURAN tubing
- Stopper: NS-PE stopper NS 14/23
- Dimensions: Ø 17 mm × height 155 mm
- Bottom: short pointed conical, height 22 mm
- Graduation: ungraduated
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Questions about Test tubes, made from DURAN tubing, wi
What is this article?
Test tubes, made from DURAN tubing, wi 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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