Water stills

Q: Water Purification : What should I use to de-scale a Merit water still?

A: A proprietary brand of kettle de-scaler or a weak organic acid such as formic or citric acids. Aquatron and Distinction stills have glass sheathed elements and so can be de-scaled quickly using hydrochloric acid.

Q: Water Purification : Why is the distilled water from my water still acidic?

A: The low pH is caused by the presence of dissolved carbon dioxide forming a weak solution of carbonic acid. This usually has no effect in general use but, if necessary, can be removed by boiling the water. Care must then be taken to protect the water from contact with the air as it cools or the carbon dioxide will quickly re-dissolve. For further information please email: stuarthelp@bibby-scientific.com