Description
Durham tubes 35 x 6 mm are small ungraduated soda-lime glass tubes with a round bottom and straight rim, commonly used for gas detection in microbiological fermentation tests. Each tube measures 35 mm in length and 6 mm in outer diameter, features a wall thickness of 0,7 mm and holds a nominal volume of 0,5 ml. Placed inverted inside larger culture tubes, they trap gas produced during microbial metabolism, providing a clear visual indicator of fermentation activity. These tubes from manufacturer Marienfeld are packed in cartons of 250 pieces and supplied in units of 1000 pieces for convenient laboratory stocking. The soda-lime glass construction ensures optical clarity so that gas bubbles are easily observed. Their compact size and round bottom design allow secure nesting within standard test tubes while remaining stable during incubation. Ideal for microbiology, food testing, water analysis and teaching laboratories that require reliable, small-volume glassware for classic Durham-tube fermentation assays and related gas-collection applications.
This article is part of Test tubes, in Tubes & vials.
Key features
- Pack size: 1000 pc(s)
- Material: soda-lime glass
- Dimensions: 35 x 6 mm
- Wall thickness: 0,7 mm
- Nominal volume: 0,5 ml
- EAN: 4250317309686
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Questions about Durham tubes 35x6 mm,
What is this article?
Durham tubes 35x6 mm, is the article on this page. Luminix Health distributes Marienfeld 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.