Spike Solution Set Back Catalog number: 52259 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1534.20-K-T Perylene-d12, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 1520-96-3 Price on request 2517.8-100-ME Caffeine,100 µg/mL,MeOH,1mL, Price on request 21013 EPA Method 8260 Internal Standard - Revised Price on request