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WebTest methods (SM 9221, SM 9222 and SM 9223) for detection and quantification of these indicators in water and wastewater samples have become routine methods in any environmental laboratories that test … WebBiologics Testing Solutions. Charles River provides tailored global testing and manufacturing services to support clients throughout the biologic development cycle, from discovery through preclinical and clinical … WebOct 14, 2010 · To ensure proper biological activity during the BOD test, a wastewater sample: Must be free of chlorine. If chlorine is present in the sample, a dechlorination chemical (e.g, sodium sulfite) must be added … great clips menomonie wi