Spiking Standard 5 Back Catalog number: 52071 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675317 Aminopyralid, 100 µg/ml, tert-Butyl methyl ether, Price on request 677421 1-Naphthol-4-sulfonic acid, 10mg Price on request 675437 Spirodiclofen, 100mg Price on request