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Table of Contents < Method 550/550.1 Method 552 >  Method 551.1 USEPA Method 551.1 is an analytical method for the determination of chlorinated disinfection byproducts, chlorinated solvents and halogenated pesticides/herbicides in finished drinking water, drinking water in various treatment stages, and raw sourcewater. This method specifies an MTBE extraction and a gas chromatograph equipped with a capillary column to preform the separation and an ECD (Electron capture) detector.  Check Solution Compound µg/mL Alachlor 83 Bromacil 83 Bromodichloromethane 30 Endrin 30 Compound µg/mL gamma-BHC 0.2 Hexachlorocyclopentadiene 20 Trichloroethene 30           1.2 mL @ 0.2 µg/ml in MTBE   Catalog#: 5511-PC  $30.00         1.2 mL @ 20 µg/ml in MTBE   Catalog#: 5511-PC  $30.00         1.2 mL @ 30 µg/ml in MTBE   Catalog#: 5511-PC  $30.00         1.2 mL @ 83 µg/ml in MTBE   Catalog#: 5511-PC  $30.00     Clor Disinfection Bromochloroacetonitrile Bromodichloromethane Bromoform Carbon tetrachloride Chloroform Chloropicrin 1,2-Dibromo-3-chloropropane Dibromoacetonitrile Dibromochloromethane 1,2-Dibromoethane 1,1-Dichloroacetone Dichloroacetonitrile Tetrachloroethene Trichloroacetonitrile 1,1,1-Trichloroethane Trichloroethene         1.2 mL @ 2000 µg/ml in AC   Catalog#: 5511-A  $58.00     Decafluorobiphenyl Decafluorobiphenyl           1.2 mL @ 1000 µg/ml in METH   Catalog#: S-1103  $20.00     Halogenated Pest & Herb Blend Alachlor Atrazine Bladex Bromacil Endrin Endrin aldehyde Endrin ketone gamma-BHC Heptachlor Heptachlor epoxide Hexachlorobenzene Hexachlorocyclopentadiene Methoxychlor Metolachlor Metribuzin Trifluralin         1.2 mL @ 2000 µg/ml in AC   Catalog#: 5511-PH  $58.00     Internal Standard 1-Bromo-4-fluorobenzene         1.2 mL @ 10000 µg/ml in AC   Catalog#: 5511-I  $21.00