EPA Method 525 - PCB Standard Back Catalog number: 19063 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8482.22-K-ME Diltiazem (free base), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 42399-41-7 Price on request 70142 2,4-Dichlorophenol Price on request 56064 Gadolinium (Gd) Price on request