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Section No. 4.0 <br /> Revision No. 6 <br /> Date 6/1/88 <br /> Page 5 <br /> Color P, G Cool, 40C 48 hours <br /> Cyanide, total and amenable P, G Cool, 40C, NaOH to pH>12, 14 days <br /> to clorination 0.6g ascorbic acid <br /> Fluoride P None required 28 days <br /> Hardness P, u" HNO3to pHQ, H2SO4to pH>12 b months <br /> Hydrogen ion (pH) P, G None required Analyze <br /> Immediately <br /> Kjeldahl and organic P, G Cool, 40C, H2SO4to ph<2 28 days <br /> nitrogen <br /> Chromium VI P, G Cool , 4°C 24 hours <br /> Mercury P, G HNO3 to pH<2 28 days <br /> Metals except chromium VI P, G HNO3 to pH<2 5 months <br /> and mercury <br /> Nitrate P, G Cool, 40C 48 hours <br /> Nitrate-nitrite P, G Cook, 40G, H2SO4to ph<2 28 days <br /> Nitrite P, G Cool, 4°C 48 hours <br /> Oil and grease G Cool, 4°C, H2504 to pHQ 28 days <br /> s Organic carbon P, G Cool , 4°C, HC or H2SO4 28 days <br /> to pHQ <br /> Orthophosphate F, G Filter immediately, cool .1-8 hours <br /> 4°CF <br /> Oxygen, Dissolved Probe G Bottle None required Analyze <br /> & Top immediately <br /> Wrinkler Do Fix on site and store 8 hours <br /> in dark <br /> Phenols G only Cool , 40C, H2SO4 to pHQ 28 days <br /> Phosphorus (elemental) G Cool , 4°C 48 hours <br /> Phosphorus, total P, G. Cool, 40C, H2SO4 to pHQ 28 days <br /> Canonie.Env i ronrnental <br />