Internal & Surrogate Standard Back Catalog number: 97790 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673419 Propamocarb, 100 µg/ml, Acetonitrile, 5ml Price on request 56011 Sodium (Na) Price on request 682208 Benoxacor, 100 µg/ml, Acetonitrile, 5ml Price on request