EPA Method 552,552.1,552.2 Internal Std Back Catalog number: 30105 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59553 TOC Calibration Standard Price on request S-4212-20-4.5PEX5 ISO 9377-2 Extraction Solvent Stock Solution I S-4212-20-100PE Units: 1x5mL, 5x5mL, 10x5mL extraction solvent stock solution 1x100ml and 5x100mL extraction solvent stock solution n-Decane 20 µL n-Tetracontane 20mg Pentane Add to Price on request 96588 Ibuprofen, 100μg/ml in MeOH, 1ml Price on request