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Common cap sizes include 33-430 (33mm), 38-430 (38mm), and GL 45 (45mm). Caps range in size from narrow mouthed to wide mouthed and often a glass or plastic funnel is needed to properly fill a reagent bottle from a larger or equal sized container's mouth. Reagent bottle caps are commonly said to be "autoclavable".
Reagent bottles are containers with narrow openings generally used to store reagents or samples. Small bottles are called vials. Jars are cylindrical containers with wide openings that may be sealed. Bell jars are used to contain vacuums.
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Flasks which do not come with such stoppers or caps included may be capped with a rubber bung or cork stopper. Flasks can be used for making solutions or for holding, containing, collecting, or sometimes volumetrically measuring chemicals , samples, solutions , etc. for chemical reactions or other processes such as mixing, heating, cooling ...
Screw-in filters, which allow the user to add coffee grounds or tea, pour boiling water over the contents, seal the lid, and brew the beverage. Screw-on LED lights, creating a usable lantern with low power consumption. Another widely available Nalgene Outdoor product is a 650 ml (22 fl oz) "All-Terrain" or "bike" bottle.
Tissue culture bottles: to grow or keep alive cells or tissue from a living organism, e.g. stem cells: Tuberculin syringe: as a normal syringe or to perform Mantoux test: ULT freezer: to freeze and storage of specimens Universal container: a cylindrical small glass bottle with a screw cap used as a culture medium holder Vaccine bath
A screw cap or closure is a common type of closure for bottles, jars, and tubes.. Common screw closures (from left to right): Plastic bottle with plastic screw cap, Dispensing closure for salad dressing (with inner seal), Break-away closure for syrup, Dispensing pump closure, Dispensing closure (with inner seal), Spray pump, Metal closure on glass jar, Child resistant closure, Cap on ...
A chemistry test tube typically has a flat bottom, a round bottom, or a conical bottom. Some test tubes are made to accept a ground glass stopper or a screw cap. They are often provided with a small ground glass or white glaze area near the top for labelling with a pencil.