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  2. RCA clean - Wikipedia

    en.wikipedia.org/wiki/RCA_clean

    The first step (called SC-1, where SC stands for Standard Clean) is performed with a solution of (ratios may vary) [2] 5 parts of deionized water; 1 part of ammonia water, (29% by weight of NH 3) 1 part of aqueous H 2 O 2 (hydrogen peroxide, 30%) at 75 or 80 °C [1] typically for 10 minutes. This base-peroxide mixture removes organic residues.

  3. Saeco - Wikipedia

    en.wikipedia.org/wiki/Saeco

    The Saeco AuLika professional machine. The Saeco Conica Coffee grinder - Coffeemill. Philips Saeco S.p.A., or short Saeco, is an Italian manufacturer of manual, super-automatic and capsule espresso machines and other electrical goods with headquarters and factories in Gaggio Montano near Bologna.

  4. Espresso machine - Wikipedia

    en.wikipedia.org/wiki/Espresso_machine

    An espresso machine brews coffee by forcing pressurized water near boiling point through a "puck" of ground coffee and a filter in order to produce a thick, concentrated coffee called espresso. Multiple machine designs have been created to produce espresso. Several machines share some common elements, such as a grouphead and a portafilter. An ...

  5. Coffeemaker - Wikipedia

    en.wikipedia.org/wiki/Coffeemaker

    A stove-top, Italian style coffee maker A 2016-model electric coffeemaker. A coffeemaker, coffee maker or coffee machine is a cooking appliance used to brew coffee.While there are many different types of coffeemakers, the two most common brewing principles use gravity or pressure to move hot water through coffee grounds.

  6. Liver function tests - Wikipedia

    en.wikipedia.org/wiki/Liver_function_tests

    Unconjugated bilirubin is a breakdown product of heme (a part of hemoglobin in red blood cells). The liver is responsible for clearing the blood of unconjugated bilirubin, by 'conjugating' it (modified to make it water-soluble) through an enzyme named UDP-glucuronyl-transferase. When the total bilirubin level exceeds 17 μmol/L, it indicates ...

  7. Coffee extraction - Wikipedia

    en.wikipedia.org/wiki/Coffee_extraction

    Espresso yield is generally 15–25%: [2] 25% is quoted as the Italian extraction. [9] Espresso yield has received significantly less attention in the literature than brewed coffee extraction. [9] [2] Espresso yield features a number of surprising properties: [2] yield depends primarily on depth of the "puck" (cylinder of coffee grounds);