Description
Test tube 20x125 mm GL18 sterilisable is a thick-walled borosilicate glass laboratory tube supplied complete with screw thread and matching cap with seal. The tube measures 125 × 20 mm, carries a GL 18 thread and includes a writing field for clear sample identification during routine handling. Fully sterilisable as a complete assembly, it is intended for repeated laboratory use where a secure screw closure is required. Offered as a single piece with a net weight of 0,023 kg, this robust format from manufacturer Witeg suits sample tubes, reaction tubes and general preparative or analytical workflows. The thick-wall construction provides mechanical stability on the bench, while the integrated seal on the cap supports a dependable closure during storage and processing steps. Standardised GL 18 geometry keeps the tube compatible with the supplied screw cap, simplifying everyday laboratory organisation. Borosilicate glass combined with a sterilisable screw-cap design makes the tube a practical choice for laboratories that need durable, reusable glassware for sample handling and reaction work without unnecessary complexity.
This article is part of Test tubes, in Tubes & vials.
Key features
- Pack size: 1 pc
- Dimensions: 125 × 20 mm
- Thread: GL 18
- Material: Borosilicate glass
- Wall: Thick-walled
- Features: Writing field, screw cap with seal
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Questions about Test tubes, boro. screw thread, w. cap
What is this article?
Test tubes, boro. screw thread, w. cap 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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.