Appendix II Semi-Volatile Mix Back Catalog number: 92218 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72556 Chloroform-d Price on request 0174.18-500-IO 4-Phenyldibenzofuran, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 74104-10-2 Price on request 2637.28-1UG 17 alpha(H),21ß(H)-28,30-Bisnorhopane, neat, Solvent-neat, Unit ca. 1µg , # of units-1, Cas.no. Price on request