Cations Mix Back Catalog number: 59402 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679884 4,4'-Diamino-3,3'-dimethyldiphenylmethane, 100 µg/ Price on request 682090 Crotonic acid, 100mg Price on request A786990 L-Ascorbic Acid, 100g Price on request