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EPA Method 500 SeriesMethod 531 + 531.1 N-Methyl carbamoyl oximes &N-Methyl carbamates by HPLCM-531-SETEach at 0.1 mg/mL in AcCN$ 90 / set of 11 x 1 mLAnalytes listed belowEach at 0.1 mg/mL in AcCN Cat. No. Price / 1 mLAldicarb sulfoxide M-531-01 $ 20Aldicarb sulfone M-531-02 20Oxamyl M-531-03 12Methomyl M-531-04 123-Hydroxycarbofuran M-531-05 20Aldicarb M-531-06 12Propoxur M-531-07 12Carbofuran M-531-08 12Carbaryl M-531-09 121-Naphthol M-531-10 12Methiocarb M-531-11 12Method 532 Phenylureas by HPLCPhenylurea Concentrate StandardM-532-CONC1$ 45 / 1 x 1 mLM-532-CONC1-PAKSAVE 20% $ 180 / 5 x 1 mL5.0 mg/mL each in MeOH 6 comps.KarmexFluometuronLinuronPropanilSiduronTebuthiuronPhenylurea Concentrate StandardM-532-CONC2$ 30 / 1 x 1 mLM-532-CONC2-PAKSAVE 20% $ 120 / 5 x 1 mL5.0 mg/mL each in Acetone 2 comps.DiflubenzuronThidiazuronMethod 531-535M-531M$ 60 / 1 x 1 mLM-531M-PAK NEWSAVE 20% $ 240 / 5 x 1 mL0.1 mg/mL each in AcCN 11 comps.Performance Check SolutionM-531-QC-RAt stated conc. in AcCNAldicarb sulfoxideBDMCInternal StandardM-531-IS0.1 mg/mL in AcCN(100 µg/mL)(10 µg/mL)3-HydroxycarbofuranMethiocarb4-Bromo-3,5-dimethylphenyl N-methylcarbamate (BDMC)$ 30 / 1 x 1 mL4 comps.(2 µg/mL)(20 µg/mL)$ 25 / 1 x 1 mLPhenylurea Primary Dilution StandardM-532 $ 50 / 1 x 1 mLM-532-PAKSAVE 20% $ 200 / 5 x 1 mL100 µg/mL each in MeOH, except Siduron 8 comps.DiflubenzuronKarmexFluometuronLinuronPhenylurea Surrogate StandardPropanilSiduron (200 µg/mL)TebuthiuronThidiazuronM-532-SS$ 35 / 1 x 1 mLM-532-SS-PAKSAVE 20% $ 140 / 5 x 1 mL500 µg/mL each in MeOH 2 comps.CarbazoleMonuronCarbamate Pesticide MixM-531-REG-ASL$ 25 / 1 x 1 mLM-531-REG-ASL-PAKSAVE 20% $ 100 / 5 x 1 mL100 µg/mL in MeOH 2 comps.CarbofuranOxamylMethod 535 Acetamide-Herbicide DegradatesEthanesulfonic acid (ESA) and oxanilic acid (OA) degradation products of acetanilide/acetamide herbicides have been found in U.S. ground waters and surface waters.The substitution of the sulfonic acid or the carbonic acid for the chlorine atom greatly increases the water solubility of degradates relative to the parent compound andcontributes to the increased potential for leaching into groundwater. As a result, alachlor ESA and other acetanilide degradation products were listed on the 1998 SafeDrinking Water Act Contaminant Candidate List (CCL). One acetamide and five acetanilide herbicides are currently registered for agricultural use in the U.S. The next stepin the CCL-process is to collect data on the concentrations and occurrence of these compounds in the nation's drinking water supplies. However, the existing analyticalmethods for measuring chloroacetanilide degradates do not address issues specific to analyzing these compounds in drinking water. Because many of the methods weredeveloped for ground water, dechlorination was not addressed nor was the method tested in all types of drinking water matrices. In addition, existing methods do notaddress all twelve ESA and OA degradates of the six U.S. registered acetanilide/acetamide herbicides. The focus of this research was to develop a sensitive and specificanalytical method for the analysis of alachlor ESA and other chloroacetanilide degradates in drinking water.M-535-SETAt stated conc. in MeOH$ 750 / 14 x 1 mLNEWAcetochlor ESAAcetochlor OAAlachlor ESAAlachlor OAFlufenacet ESAFlufenacet OAMetolachlor ESAMetolachlor OA50 µg/mL50 µg/mL50 µg/mL50 µg/mL20 µg/mL20 µg/mL50 µg/mL50 µg/mLPropachlor ESAPropachlor OADimethenamid ESADimethenamid OAInternal StandardButachlor ESA sodium saltSurrogate StandardDimethachlor ESA sodium salt20 µg/mL20 µg/mL10 µg/mL10 µg/mL20 µg/mL20 µg/mLTel. 800-442-5290 / 203-786-5290 • Fax 203-786-5287 • Web AccuStandard.com 175