EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0660.7-KIT Tail-to-tail isoprenoids Kit (0455.15-K-IO, 0651.20-K-IO, 0655.30-K-IO, 0652.30-K-IO, 9036.30-100-AN, 0654.40-500-IO, 0653.40-500-IO), , Solvent-, Unit Kit, # of units-, Cas.no. Price on request 1700-0600 Artificial Urine Medium, Stabilized, 200mL Price on request 679508 2,3-Pentandion, 100mg Price on request