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 53147 Method 1640 Tuning Standard Price on request 1939.6-1MLX5 1-(Trimethylsilyl)imidazole, neat, Solvent-neat, Unit 1mL, # of units-5, Cas.no. 18156-74-6 Price on request 1531.22-5MG Indeno[1,2,3-cd]pyrene-d12, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 203578-33-0 Price on request