• Question: How do you get rid of all bubbles in clean water?

    Asked by danai to Indi, Jarv, John, Ken, Vicky on 21 Mar 2012.
    • Photo: John Prytherch

      John Prytherch answered on 21 Mar 2012:

      Bubbles are caused by gas that is in solution (dissolved..) in the water. Gas will transfer into and out of the water depending on how much is in the water and how much in the air above. Sometimes in my job we want to measure how much gas is in a sample of water. One way to do this is to equilibrate it. Basically you put it in a container with a air pocket at the top which contains none of the gas you are interested in, then you wait. Over time, the gas you are measuring will increase in the air pocket. When it stops increasing you can calculate the concentration that was in the water.

      I guess you could use a similar method to remove all the gas from water, but you would need to keep the airspace filled with some gas that wouldn’t go into solution in the water, otherwise you would keep putting gas (and so potentially bubbles) back into the water. Off the top of my head I don’t know what, if any, gas you could use…

    • Photo: Vicky Young

      Vicky Young answered on 21 Mar 2012:

      Hay Danai

      The bubbles in water are caused by gas in it so you can remove the bubbles by degasification (de-gas it). There is loads of ways to do this but heating it is the quickest 🙂