Assertion: sodium hydroxide | /r/ObjectUse | used in the manufacturing process
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Source sentences:
text: Sodium hypochlorite metal contamination can occur through residual impurities in the sodium hydroxide that is used in the manufacturing process, by using copper piping and stainless steel fittings, by using hard water during manufacture or dilution, and/or by not filtering the sodium hypochlorite product as this will leave residual contaminants in solution.