EPA Method 515.1 Internal Standard Back Catalog number: 30023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 82514 EPA Method 8270C - B/N Matrix Spiking Solution Price on request SC-204667 Capsanthin, 50g Price on request 1090.14-K-IO 9-Methylfluorene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2523-37-7 Price on request