Editing Potassium (section)

====Laboratory uses====
An [[alloy]] of sodium and potassium, [[NaK]] is a liquid used as a heat-transfer medium and a [[desiccant]] for producing [[air-free technique|dry and air-free solvents]]. It can also be used in [[reactive distillation]].<ref>{{cite book |doi=10.1021/ba-1957-0019.ch018|volume=19 |isbn=978-0-8412-0020-3 |chapter=Ch. 18: The Manufacture of Potassium and NaK |pages=169–173 |last2=Werner |first2=R. C. |last1=Jackson |first1=C. B. |year=1957 |title=Handling and uses of the alkali metals |series=Advances in Chemistry}}</ref> The ternary alloy of 12% Na, 47% K and 41% Cs has the lowest melting point of −78{{nbsp}}°C of any metallic compound.<ref name="g76" />

Metallic potassium is used in several types of [[magnetometer]]s.<ref>{{cite book|publisher=Wiley-Blackwell|chapter-url =https://books.google.com/books?id=R_Y925b97ncC&pg=PA164|chapter = Optical Pumped Magnetometer|pages = 164|title =An introduction to geophysical exploration|isbn =978-0-632-04929-5|author =Kearey, Philip|author2 =Brooks, M|author3 =Hill, Ian|date =2002}}</ref>