Mix #1 Back Catalog number: 50229 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C16972720 Spectinomycin sulfate hydrate, certified, 0.1g Price on request 2971.14-100-IO 1,1,1-Trichloro-2,2-bis(4-chlorophenyl-d4)ethane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 93952-18-2 Price on request 681491 13C3-Caffeine, 100 µg/ml, Methanol, 1ml Price on request