EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4666-100-IOX10 Custom Biomarker Mix 0378.12 Carbazole 0615.27 17 alpha(H)-22,29,30-Trisnorhopane 0622.27 alpha alpha alpha (20R)-Cholestane 0643.28 alphaßß (20R,24S)-24-Methylcholestane 0609.29 alpha alpha alpha (20R,24R)-24-Ethylcholestane Price on request S-4502-200-25IO Phosphorous Standards Phosphorus in Isooctane Tri-n-butylphosphate, 99+% (Chiron product nr. 1399.19) CAS [126-73-8] Matrix: Isooctane , 20cSt Units: 1x25mL, 1x100mL Isooctane Price on request C13900000 Fonofos, 100mg Price on request