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Table of Contents < Method 503.1 Method 505 >  Method 504/504.1 The USEPA method 504 is an analytical method that utilizes a 2-mL of hexane to extract 35 mL drinking or ground water and a gas chromatograph equipped with a capillary column to perform the separation of EDB adn DBCP. To detect the GC eluant, an ECD(electron capture) detector is used.  DBCP, EDB, 1,2,3-TCP 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2,3-Trichloropropane           1.2 mL @ 2000 µg/ml in METH-P&T   Catalog#: 5041-AH  $27.00         1.2 ML X 4 PACK   Catalog#: 5041-AH-4  $84.00     EDB-DBCP 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane           1.2 mL @ 2000 µg/ml in METH-P&T   Catalog#: 504-AH  $27.00         1.2 ML X 4 PACK   Catalog#: 504-AH-4  $84.00