Method 200.8/1638/1640 Internal Standard Back Catalog number: 53145 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679095 Ioxynil, 100mg Price on request S13043UNL-0.1 24R,25-Dihydroxyvitamin D3, 100μg/ml, 1ml Price on request C10655500 Bisphenol A, certified, 0.25g Price on request