Spiking Standard 3 Back Catalog number: 53072 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0654.40-500-IO ßß-Carotane, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17161-33-0 Price on request 83554 Methacrolein-DNPH Price on request 59218 Anions Mix Price on request