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A boiling tube is a large test tube intended specifically for boiling liquids. A test tube filled with water and upturned into a water-filled beaker is often used to capture gases, e.g. in electrolysis demonstrations. A test tube with a stopper is often used for temporary storage of chemical or biological samples.
These tubes are usually made of glass, but can also be made of plastic or metal. They vary in size and purpose. Laboratory sample tubes must not be confused with glass tubing, which can be utilized to carry fluid between laboratory equipment. Example laboratory sample tubes are listed below: Ignition tube; Test tube; Boiling tube; NMR tube
English: This image depicts Methanococcus maripaludis samples being stored in gas tight test tubes that maintain anaerobic conditions in Dr. William Whitman's lab at the University of Georgia. Date 8 November 2023
These tubes should be used with care when measuring drug or hormone levels because the drug or hormone may diffuse from the serum into the gel, causing a reduction in measured level. The gel in SST II tubes (which appears slightly less opaque) is supposed [weasel words] to have less effect on drug levels in serum. [citation needed]
A range of Vacutainer tubes containing blood. A vacutainer blood collection tube is a sterile glass or plastic test tube with a colored rubber stopper creating a vacuum seal inside of the tube, facilitating the drawing of a predetermined volume of liquid. Vacutainer tubes may contain additives designed to stabilize and preserve the specimen ...
Tube inversions prevent clotting Lavender ("purple") EDTA (chelator / anticoagulant) Whole blood: CBC, ESR, Coombs test, platelet antibodies, flow cytometry, blood levels of tacrolimus and cyclosporin: Pink K 2 EDTA (chelator / anticoagulant) Blood typing and cross-matching, direct Coombs test, HIV viral load Royal blue ("navy") EDTA (chelator ...
Engineering drawing – a type of technical drawing that is used to convey information about an object. Detail drawings commonly specify the dimensions and tolerances for the construction of a single component, while a master drawing or assembly drawing links the detail drawings for each component in a system. Only required information is ...
Colloquially called "test-tube experiments", these studies in biology, medicine, and their subdisciplines are traditionally done in test tubes, flasks, Petri dishes, etc. [6] [7] They now involve the full range of techniques used in molecular biology, such as the omics.