Description
Test tubes with beaded rim fabricated from thick-walled DURAN® glass serve as reliable vessels for sample handling, intermediate reactions and general laboratory tasks that call for a larger working volume. This variant offers 21 ml capacity and is supplied in packs of 100 pc(s), ensuring an ample supply for busy benches. The beaded rim reinforces the tube opening, facilitates secure gripping and rack placement, and supports orderly workflow during repeated transfers. Thick-walled DURAN® glass delivers a sturdy body intended for routine laboratory service. Positioned in the labware range for test tubes and sample tubes, these items are produced by manufacturer DWK Life Sciences. The complete pack weighs 1,950 kg, which is practical for storage planning and stock rotation. Identifying the product as thick-walled, beaded-rim DURAN® test tubes of 21 ml helps laboratories maintain standardised glassware selections for educational courses, quality-control series and research protocols that depend on consistent tube formats.
This article is part of Test tubes, in Tubes & vials.
Key features
- Pack size: 100 pc(s)
- Design: Beaded rim
- Glass type: DURAN®
- Construction: Thick walled
- Capacity: 21 ml
- Weight: 1,950 kg
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Questions about Test tubes, beaded rim, DURAN®, thick walled, 21 ml, 100 unit(s)
What is this article?
Test tubes, beaded rim, DURAN®, thick walled, 21 ml, 100 unit(s) is the article on this page. Luminix Health distributes DWK Life Sciences 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.
Which category should I open next?
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.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.