GC/MS Calibration Standard Mix #1 Back Catalog number: 43027 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10085.X-100MG Purified asfalthenes from Venezuelan Oil,neat,neat,100mg, Price on request 673400 Oxadixyl, 10 µg/ml, Acetonitrile, 10ml Price on request 82429 EPA 8240B Calibration Mix 6 Price on request