Perchloric acid, sodium salt, 100µg/mL in Water, 1 Back Catalog number: ULM-7312-1.2 Availability: In the manufacturer's stock Price on request - + Recommended S-4512-100-5T Perdeuterated Internal Standard-All-in-one 15 EU Priority PAHs Price on request 8107.10-K-IO 1,4-Naphthoquinone, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 130-15-4 Price on request 3532.12-K-IO Cyclododecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 294-62-2 Price on request