Conventional Organic Analyses

Category Methods Minimum Qty. Recommended Containers Required Preservation Holding Time
Biochemical Oxygen Demand (5 Day BOD) 405.1 1 L Plastic or Glass Bottles Cool to 4° C 48 Hours
Chemical Oxygen Demand (COD) 410.1-4 50 mL Plastic or Glass Bottle Sulfuric Acid to pH <2, Cool to 4° C 28 Days
Organic Carbon Total (TOC) 415.1 25 mL Plastic or Glass Bottle Sulfuric Acid to pH <2, Cool to 4° C 28 Days
Phenolics 420.1-3 500 mL Glass Bottle Only Sulfuric Acid to pH <2, Cool to 4° C 28 Days
Surfactants (MBAS) 425.1 250 mL Plastic or Glass Bottle Cool to 4° C 48 Hours

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