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  2. Bottled gas - Wikipedia

    en.wikipedia.org/wiki/Bottled_gas

    Note: these four are most often found in containers other than metal bottles, and at low pressure, e.g. 3 to 7 standard atmospheres (300 to 710 kPa). acetylene. Note: Acetylene cylinders contain an inert packing material, which may be agamassan, and are filled with a solvent such as acetone or dimethylformamide. The acetylene is pumped into the ...

  3. History of bottle recycling in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_bottle...

    For bottle-to-bottle recycling, the bottles have to be decontaminated which was achieved by introducing "super-clean recycling processes," which in the US was done for the first time in 1991. [5] These processes clean "recycled PET flakes to contamination levels similar to virgin PET pellets," so that they can be reused as beverage containers. [5]

  4. Bottle recycling - Wikipedia

    en.wikipedia.org/wiki/Bottle_recycling

    Bottles are able to be recycled and this is generally a positive option. Bottles are collected via kerbside collection or returned using a bottle deposit system. Currently just over half of plastic bottles are recycled globally. [1] About 1 million plastic bottles are bought around the world every minute and only about 50% are recycled. [1]

  5. Suicide bag - Wikipedia

    en.wikipedia.org/wiki/Suicide_bag

    While asphyxiation by helium can be detected at autopsy, there is currently no test that can detect asphyxiation by nitrogen. For this reason, nitrogen is commonly the preferred choice for people who do not want the cause of death established. [4] [5] [6] Suicide bags were first used during the 1990s. The method was mainly developed in North ...

  6. Frito-Lay employee reveals why bags of chips have so much air ...

    www.aol.com/lifestyle/frito-lay-employee-reveals...

    By filling chip bags with nitrogen, companies are able to ensure consistent quality A Frito-Lay employee explained why potato chip bags are full of air. TikToker Selena Aragon works in ...

  7. Gas cylinder - Wikipedia

    en.wikipedia.org/wiki/Gas_cylinder

    Steel cylinders are manufactured with domed (convex) and dished (concave) bottoms. The dished profile allows them to stand upright on a horizontal surface, and is the standard shape for industrial cylinders. The cylinders used for emergency gas supply on diving bells are often this shape, and commonly have a water capacity of about 50 litres ("J").