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Table of Contents < Method 551.1 Method 552.1 >  Method 552 The USEPA method 552 utilizes an MTBE extraction and diazomethane derivizatioin of haloacetic acids and phenolic disinfectant by-products and a gas chromatograph equipped with a capillary column to perform the separation of methyl-haloacetates andanisoles. To detect the GC eluant, an ECD (electron capture) detector is used.  1,2,3-Trichloropropane 1,2,3-Trichloropropane           1.2 mL @ 1000 µg/ml in METH-P&T   Catalog#: S-3665  $20.00     3,5-Dichlorobenzoic Acid Met Ester 3,5-Dichlorobenzoic acid methyl ester           1.2 mL @ 1000 µg/ml in MTBE   Catalog#: S-1345-MEO  $26.00     FREE ACIDS Bromoacetic acid Bromochloroacetic acid Chloroacetic acid Dibromoacetic acid Dichloroacetic acid 2,4-Dichlorophenol Trichloroacetic acid 2,4,6-Trichlorophenol         1.2 mL @ 200 µg/ml in MTBE   Catalog#: 552-A  $37.00     METHYL ESTERS Methyl-Bromoacetate Methyl-bromochloroacetate Methyl-Chloroacetate Methyl-Dibromoacetate Methyl-Dichloroacetate Methyl-Trichloroacetate         1.2 mL @ 200 µg/ml in MTBE   Catalog#: 552-MEO  $37.00     SURR STD 3,5-Dichlorobenzoic acid         1.2 mL @ 2000 µg/ml in MTBE   Catalog#: 552-S  $15.00