Spiking Standard Kit Back Catalog number: 52068 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10533.28-50-ME 25-Hydroxyvitamin D2-d6, 50µg/ml in MeOH, 1ml Price on request 3670.11-100-IO 2-Methyl-1-naphthol, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 7469-77-4 Price on request 94732 4,4’-Methylenedianiline Price on request