Description
Test tube 16 x 210 mm graduated 20:0,2 ml is a laboratory glass vessel produced from DURAN tubing and supplied with an NS-PE stopper. It features a round bottom, ground joint NS 14/23 and outer dimensions of 16 mm diameter by 210 mm height. The permanent graduation scale runs to 20 ml in 0,2 ml increments, supporting volume measurement during sample handling, reagent preparation and routine analytical work. The matching polyethylene stopper seats in the NS 14/23 joint to close the tube for short-term holding or transfer of liquids. Offered by manufacturer Witeg as a single piece, the tube is intended for everyday use in chemical, biological and quality-control laboratories where graduated stoppered test tubes are required. Net weight is 0,026 kg. The combination of DURAN tubing, round-bottom geometry and NS joint makes the item suitable for general wet-chemistry workflows, sample storage and teaching applications that call for a graduated reagent or sample tube of this size and joint standard.
This article is part of Test tubes, in Tubes & vials.
Key features
- Pack size: 1 pc
- Dimensions: Ø 16 x 210 mm
- Joint size: NS 14/23
- Graduation: 20:0,2 ml
- Bottom shape: Round bottom
- Stopper: NS-PE stopper
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Questions about Test tubes, with ST-PE-stoppers, made fr
What is this article?
Test tubes, with ST-PE-stoppers, made fr 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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