Interference Standard 4 Back Catalog number: 52041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11907.20-1G Fluorescein disodium salt dihydrate, 90%,neat,neat,1g, Price on request 9269.22-100-ME Vitamin A-d5 acetate,100 µg/mL,MeOH,1mL Price on request 3633.15-50-AN T-2 Tetraol, 50µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 34114-99-3 Price on request