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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	TDS measurement indicates materials such as salts, bases or minerals, which contribute to electrical conductivity, within a solution. pH testers measure the acidity or alkalinity of a substance.
http://www.w3.org/ns/prov#wasQuotedFrom	amazonsupply.com