About: http://webisa.webdatacommons.org/54541264

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	There are a lot of plans on the internet for building your own, including suggestions to use food-grade plastic, stainless, or copper for the coiled tubing.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com