Spiking Standards Kit Back Catalog number: 53073 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended D479975 2,4-Dinitrophenylhydrazine, 98%, 25g Price on request E888863 Estradiol 17-Valerate-d12, 2,5mg Price on request 57250 Tin (Sn) Price on request