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Table ~-107 <br />water Analysts Holding Times <br /> Max ~mUm <br /> Sto::age <br />Pa rameier Container pre se [vation Req ulatory* <br />Acrdity PlasticlGlass Ref rigera tlon 14 ,ia ys <br />Al kalini :y Plastic/Glass Refrigeration 14 days <br />BOD Plastic/Glass Refrigeration 48 :lours <br />Boron Plastic None Required ZB days <br />Bromide Plastic/Glass None RequireC 28 days <br />COD Plastic/Glass Add H28Oq co pH 2 28 days <br />Cc11 _`crms Pl astlc Iste r_le~ Refrigeration 24 nours <br />Chioroph}"_1 Plastic/Glass 30 days Sn dark: 30 jays <br /> freeze <br />Chron_um 'JT Plastic/Glass Refngeraiion 24 hours <br />Color Plastic/Glass Refri gera tl on 48 hours <br />Contluctivity Plastic/Glass Ref rigerau cn 28 days <br />Cyanide, 'total Piast is/Glass Add NaOH to pH 12, 14 days <br /> Refrigeration <br />Fluoride Plastic/Glass None Required 26 days <br />Hardness Plastic/Glass Add HNO3 to pH 2 6 months <br />Metals, General Plastic/Glass Add HNO3 to pH 2 6 months <br />Mercury Plastic/Glass Add HNO3 to pH 2, 28 days <br /> Ref rigeratlon <br />lilt roger, Ammonia Plastic/Glass Add H2504 to pF." 2, 28 days <br /> Refrigeration <br />Nitrogen, NO3/N02 Plastic/Glass Refrigeration 28 days <br />Nitrogen, Nitr_re Plastic/Glass Refrigeration 48 hours <br />Nitroaer., Total Plastic/Glass Add H2504 to pH 2, 28 days <br /> Refrigeration <br />Oil arc Grease Glass Add H25O4 to pH 2, 28 days <br /> Ref rigeration <br />Orcan.c _arbon Glass Add H2504 to o- 2, 20 days <br /> Ae`rigeration <br />Fh erica Glass Add F2SOS to c- 2, 28 days <br /> Refrigeration <br />p'r. Plastic/Glass Anal y2e Immedlate'_y N/A <br />phosp`.ate Plastic/Glass Filter, 46 hours <br /> Ref rigeratior. <br />PCG50'.d te, Cotal Plastic/Glass H2S04 to pH 2, 28 da}'s <br /> Refri cera ti or. <br />Solids, vi ssclved Plastic/Glass Ae`rigeraticn ~ days <br />So_:c s, Suspended P1 asu c/Glass kef tigeration 7 days <br />Solids, Sett'_eable Plastic/Glass Refrigeratior, 46 hours <br />Silica Plastic Refrigeration 28 days <br />Sulfa.e Plastic/Glass Refrigeration 26 days <br />Sc=.`i ce Plastic/Glass NaOH tc pH 9, 7 days <br /> Zinc Acetate <br />Turbicity Plastic/Glass Refrigeration (dark) 48 hours <br />`Environmental Protection Agency, Proposed F:ul es, Fetl oral Register, Vol. 99, No. 209, Oct. <br />26, 1584. <br /> <br />• <br /> <br />7-354 Revised 02/05/97 <br />