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  2. Liquid nitrogen - Wikipedia

    en.wikipedia.org/wiki/Liquid_nitrogen

    If the liquid nitrogen manages to pool anywhere, it will burn severely. As liquid nitrogen evaporates it reduces the oxygen concentration in the air and can act as an asphyxiant, especially in confined spaces. Nitrogen is odorless, colorless, and tasteless and may produce asphyxia without any sensation or prior warning. [20] [21] [22]

  3. Kiehl's - Wikipedia

    en.wikipedia.org/wiki/Kiehl's

    Kiehl's original store, located at 3rd Avenue and 13th Street in the East Village of Manhattan, occupies the same space as when it was founded in 1851. [4] The site of Kiehl's location is known as "Pear Tree Corner" for the pear tree Peter Stuyvesant, governor of the Dutch colony New Amsterdam, planted there in 1667. [12]

  4. Cold trap - Wikipedia

    en.wikipedia.org/wiki/Cold_trap

    In vacuum applications, a cold trap is a device that condenses all vapors except the permanent gases (hydrogen, oxygen, and nitrogen) into a liquid or solid. [ 2 ] [ needs update ] The most common objective is to prevent vapors being evacuated from an experiment from entering a vacuum pump where they would condense and contaminate it.

  5. Hypothetical types of biochemistry - Wikipedia

    en.wikipedia.org/wiki/Hypothetical_types_of...

    Very-low-temperature fluids: liquid nitrogen [45] and hydrogen. [45] High-temperature liquids: sodium chloride. [78] Sulfuric acid in liquid form is strongly polar. It remains liquid at higher temperatures than water, its liquid range being 10 °C to 337 °C at a pressure of 1 atm, although above 300 °C it slowly decomposes.

  6. Liquid nitrogen wash - Wikipedia

    en.wikipedia.org/wiki/Liquid_nitrogen_wash

    The liquid nitrogen wash has two principle functions: [1] Removal of impurities such as carbon monoxide, argon and methane from the crude hydrogen gas; Addition of the required stoichiometric amount of nitrogen to the hydrogen stream to achieve the correct ammonia synthesis gas ratio of hydrogen to nitrogen of 3 : 1

  7. Cryopreservation - Wikipedia

    en.wikipedia.org/wiki/Cryopreservation

    A tank of liquid nitrogen, used to supply a cryogenic freezer (for storing laboratory samples at a temperature of about −150 °C or −238 °F) Controlled-rate and slow freezing , also known as slow programmable freezing (SPF) , [ 18 ] is a technique where cells are cooled to around -196 °C over the course of several hours.

  8. Cryogenics - Wikipedia

    en.wikipedia.org/wiki/Cryogenics

    Nitrogen is a liquid under −195.8 °C (77.3 K).. In physics, cryogenics is the production and behaviour of materials at very low temperatures.. The 13th International Institute of Refrigeration's (IIR) International Congress of Refrigeration (held in Washington DC in 1971) endorsed a universal definition of "cryogenics" and "cryogenic" by accepting a threshold of 120 K (−153 °C) to ...

  9. Cryogenic gas plant - Wikipedia

    en.wikipedia.org/wiki/Cryogenic_gas_plant

    A cryogenic gas plant is an industrial facility that creates molecular oxygen, molecular nitrogen, argon, krypton, helium, and xenon at relatively high purity. [1] As air is made up of nitrogen, the most common gas in the atmosphere, at 78%, with oxygen at 19%, and argon at 1%, with trace gasses making up the rest, cryogenic gas plants separate air inside a distillation column at cryogenic ...