What is Still?
[[Image:Glenfiddich Distillery stills.jpg|thumb|right|Swan-necked stills in a distillery. These stills are used to make [[whisky]]]] A '''still''' is a tool used to clean a [[liquid]]. It does this by first [[boiling]] the liquid and turning it into a [[gas]]. This gas is then cooled, changing it back into liquid. Stills get their name from the word di''still''ation. [[Distillation]] is the process of boiling and cooling a liquid to purify it. Stills are most often used to create [[alcohol]], but they can also be used with any liquid. Some examples are [[medicine]]s and [[perfume]]s. There are two main types of stills: pot stills and reflux stills. In a pot still, the pot (like a large kettle) holding the liquid is heated. The hot gas is cooled in a simple neck, or tube, and collected.<ref>{{Cite web |url=http://www.moonshine-still.com/page5.htm |title=Building a World Class Home Distillation Apparatus - What Kind of Still? |work=moonshine-still.com |accessdate=2 August 2010 |archive-date=9 February 2010 |archive-url=https://web.archive.org/web/20100209073000/http://www.moonshine-still.com/page5.htm |url-status=dead }}</ref> Pot stills are used for making alcohol like whisky. A reflux still is much more complex. It works with a continual flow of liquid going into the boiler, and a continual flow of distilled liquid coming out. The distilled liquid can also be put through the process several times, which is why it is called a reflux still. This allows for a more pure product, and the person working the still can control the level of purity.<ref>{{Cite web |url=http://www.moonshine-still.com/page6.htm |title=Building a World Class Home Distillation Apparatus - The Evolution of the Reflux Still |work=moonshine-still.com |accessdate=2 August 2010 |archive-date=2 November 2010 |archive-url=https://web.archive.org/web/20101102084126/http://moonshine-still.com/page6.htm |url-status=dead }}</ref> Reflux stills are used in the chemical and [[petroleum]] industries. ==References== {{reflist}} {{tech-stu