| http://www.w3.org/ns/prov#value | - Product # DWPKOM36 / Price varies and shipping charges apply. [ Visit our Tech Brief Web page. ] Water and Wastewater Treatment Formula Pocket Cards 2007: This laminated pocket card lists several formulas useful to water and wastewater treatment operators, such as backwash rate, chlorine dosing, detention time, flow, and solution strength.
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