| http://www.w3.org/ns/prov#value | - Therefore, the object of this invention is to provide a biocide for metal-working fluids which is economical and stable in use; effective over a wide pH range; resists water hardness; does not induce foam; inhibits a broad spectrum of microorganisms, especially gram-negative bacteria and fungi; and is non-irritating to skin and has a low acceptable toxicity level to users and upon discharge as eff
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