EPA Method 528 Internal Standard Back Catalog number: 93188 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4422-40-4.5PEX5 ISO 9377-2 MOD Extraction Solvent Stock Solution II 40µg/mL of each Units: 1x100mL and 5x100mL extraction solvent stock solution n-Heptane 40mg n-Tetracontane 40mg Pentane Add to 1000mL Price on request 5190-9756 Ethanol 20mg/dL Standard (10 x 1mL) 63,36 € 674753 Dithianon, 250mg Price on request