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  2. Vacuum packing - Wikipedia

    en.wikipedia.org/wiki/Vacuum_packing

    Vacuum packing is a method of packaging that removes air from the package prior to sealing. This method involves placing items in a plastic film package, removing air from inside and sealing the package. [1] Shrink film is sometimes used to have a tight fit to the contents. The intent of vacuum packing is usually to remove oxygen from the ...

  3. Sous vide - Wikipedia

    en.wikipedia.org/wiki/Sous_vide

    Sous vide cooking using thermal immersion circulator machines. Sous vide (/ s uː ˈ v iː d /; French for 'under vacuum' [1]), also known as low-temperature, long-time (LTLT) cooking, [2] [3] [4] is a method of cooking invented by the French chef Georges Pralus in 1974, [5] [6] in which food is placed in a plastic pouch or a glass jar and cooked in a water bath for longer than usual cooking ...

  4. Suction filtration - Wikipedia

    en.wikipedia.org/wiki/Suction_filtration

    Filtration is a unit operation that is commonly used both in laboratory and production conditions. This apparatus, adapted for laboratory work, is often used to isolate the product of synthesis of a reaction when the product is a solid in suspension. The product of synthesis is then recovered faster, and the solid is drier than in the case of a ...

  5. Vacuum cleaner - Wikipedia

    en.wikipedia.org/wiki/Vacuum_cleaner

    A vacuum cleaner, also known simply as a vacuum, is a device that uses suction, and often agitation, in order to remove dirt and other debris from carpets and hard floors. The dirt is collected into a dust bag or a plastic bin. Vacuum cleaners, which are used in homes as well as in commercial settings, exist in a variety of sizes and types ...

  6. Dark-alley defense: Tech tools to keep you safe - Engadget

    www.engadget.com/2019-08-29-the-best-self...

    We asked White to break down the best gadgets to have in your bag, pocket or hand when walking alone down a dark alley, and he had plenty of suggestions. He also had a story for every situation. S ...

  7. Manual vacuum cleaner - Wikipedia

    en.wikipedia.org/wiki/Manual_vacuum_cleaner

    Manual vacuum cleaner. The manual vacuum cleaner was a type of non-electric vacuum cleaner, using suction to remove dirt from carpets, being powered by human muscle, similar in use to a manual lawn mower. Its invention is dated to the second half of the 19th century, when patents were granted to inventors in the United States, Britain, France ...

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