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' METHODS cont ~ d <br />CeriodaAhnia dubia were exposed to the following effluent <br />characterization tests: <br />Initial Effluent Toxicity Test <br />Definitive Baseline Effluent Toxicity Test <br />pH Adjustment Test- Effluent adjustment to pH 3 and pH 11 with <br />6N and 1N HCL, and, lON and 1N NAOH followed by adjustment to <br />to the original pH (± 0.2) of effluent with the same acid and <br />base. <br />EDTA Chelation Test- Ten aliquots of 100% effluent containing <br />0.0 to 1.0 ml. of 3.723 g/L EDTA. <br />Oxidant Reduction Test- Ten aliquots of 100$ effluent <br />containing 0.0 to 1.0 ml. of 10 g/L Na,SZ03. <br />-3- <br />COM MER CIALTESTING & ENGIN EE RING CO. <br />-may Waterm ark etl For Your PrOICCI~On ~~` <br />