<http://schema.org/description>
"&lt;p&gt;In some machining situations, variations in coolant concentration can affect surface finish, part-to-part consistency...even the useful life of the coolant and cutting tools.&lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/articles/maintaining-constant-coolant-concentration>