EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1538.18-K-TX5 Triphenylene-d12, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 17777-56-9 Price on request 58066 Dysprosium (Dy) Price on request 59133 ICV (Metals Mix #4) Price on request