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  2. Valve oil - Wikipedia

    en.wikipedia.org/wiki/Valve_oil

    There are two main valve types on brass instruments: piston and rotor. Accordingly, vendors sell different types of oil, including scented varieties. Some vendors recommend up to three different types of oil for some valve types. Slide oil for trombones is also a very similar solution. The difference between oil types is primarily the viscosity ...

  3. Ultrapure water - Wikipedia

    en.wikipedia.org/wiki/Ultrapure_water

    Ultrapure water (UPW), high-purity water or highly purified water (HPW) is water that has been purified to uncommonly stringent specifications. Ultrapure water is a term commonly used in manufacturing to emphasize the fact that the water is treated to the highest levels of purity for all contaminant types, including: organic and inorganic compounds; dissolved and particulate matter; volatile ...

  4. Purified water - Wikipedia

    en.wikipedia.org/wiki/Purified_water

    Completely de-gassed ultrapure water has a conductivity of 1.2 × 10 −4 S/m, whereas on equilibration to the atmosphere it is 7.5 × 10 −5 S/m due to dissolved CO 2 in it. [10] The highest grades of ultrapure water should not be stored in glass or plastic containers because these container materials leach (release) contaminants at very low ...

  5. Degassing - Wikipedia

    en.wikipedia.org/wiki/Degassing

    The most efficient method of industrial oil degassing is vacuum processing, which removes air and water solved in the oil. [6] This can be achieved by: spraying of oil in large vacuum chambers; distributing the oil into a thin layer over special surfaces (spiral rings, Raschig rings etc) in vacuum chambers.

  6. Christmas tree (oil well) - Wikipedia

    en.wikipedia.org/wiki/Christmas_tree_(oil_well)

    Oil well Christmas tree. In petroleum and natural gas extraction, a Christmas tree, or tree, is an assembly of valves, casing spools, and fittings used to regulate the flow of pipes in an oil well, gas well, water injection well, water disposal well, gas injection well, condensate well, and other types of well.

  7. 34 Unique Things to Do on New Year's Eve to Ring in 2025 - AOL

    www.aol.com/25-unique-things-years-eve-204800916...

    The best ideas for things to do on New Year's Eve 2024, including fun ways to celebrate at home and inspiring New Year's activities for any age or group size.

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