Description
Test tubes DURAN® blue graduated 25:0,5 ml with NS 14/23 joint and a length of 215 mm are laboratory glassware designed for volumetric measurements and general sample work. Made from borosilicate glass 3.3, they combine chemical durability with good thermal performance for standard laboratory conditions. Blue graduations mark volumes in 0,5 ml increments up to a nominal capacity of 25 ml (0,025 l), aiding clear reading during preparation, dilution and transfer steps. The tubes feature an outer diameter of 18 mm and include a standardised NS 14/23 ground joint with a polyethylene stopper, enabling secure closure and connection to matching ground-joint apparatus. These DURAN® test tubes from manufacturer Hirschmann are appropriate for qualitative analysis, sample handling, controlled heating and small-scale reactions in research, industrial QC and educational settings. Delivered in packs of 10 pieces, they are convenient for stocking shared workstations. Robust glass construction, a clearly visible blue scale and a reliable joint finish help maintain practical, repeatable use across routine laboratory procedures.
This article is part of Test tubes, in Tubes & vials.
Key features
- Pack size: 10 pc(s)
- Storage temperature: +5 - +40 °C
- Material: Borosilicate glass 3.3
- Outer diameter: 18 mm
- Length: 215 mm
- EAN: 4049338015849
- Technical Information Sheet:
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Questions about TEST TUBES, DURAN®, BLUE GRAD, 25:0,5 ML, NS 14/23, L 215 MM
What is this article?
TEST TUBES, DURAN®, BLUE GRAD, 25:0,5 ML, NS 14/23, L 215 MM is the article on this page. Luminix Health distributes Hirschmann 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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