Description
Test tubes 13 × 100 mm with NS 12/21 joint are round-bottom, ungraduated tubes supplied with NS-PE stoppers. Manufactured from DURAN tubing, they provide the chemical resistance and thermal stability expected of borosilicate laboratory glassware for general sample handling, reactions and storage. The standard ground joint NS 12/21 allows secure closure with the included polyethylene stopper and supports connection to compatible glassware when needed. Each tube measures 13 mm in diameter by 100 mm in length, offering a compact format suitable for small-volume work in analytical, teaching and research laboratories. The set is packed as 10 pieces and originates from manufacturer Witeg. These ungraduated round-bottom tubes are intended for routine laboratory procedures where a reliable glass vessel with a standard joint and stopper is required, without printed volume markings.
This article is part of Test tubes, in Tubes & vials.
Key features
- Pack size: 10 pc(s)
- Dimensions: 13 × 100 mm
- Joint: NS 12/21
- Stopper: NS-PE stopper included
- Bottom: Round bottom, ungraduated
- Material: DURAN tubing
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Questions about Test tubes 13 x 100mm ST 12/21
What is this article?
Test tubes 13 x 100mm ST 12/21 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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