Custom Mix Back Catalog number: 59642 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-0-S Dibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 92575 EPA Method 8240B - Purgeable Internal Standard Price on request 679424 13C6-Oxyclozanide, 10mg Price on request