EPA Method 200.8 Internal Standard Back Catalog number: 56332 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10117.25-50-ME 4'-Methyl-AM-2201, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1354631-24-5 Price on request S-4030-ASS-IO C20Triaromatic sterane/C26Triaromatic sterane C20 Triaromatic sterane (0857,20)/ C26 Triaromatic sterane (0854,26) = 1:3 (0,33) 50 + 150 µg/mL in isooctane, 1mL pr. vial Price on request 52250 Method 200.7 Single Element Kit Price on request