PCB Congener Internal Standard Mix Back Catalog number: 94569 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73242 (+/-)-Norverapamil Price on request 8954.23-100-T 3-Chloro-1,2-propandiol-1-monoarachidate Price on request 92207 EPA Method 525.2Mix #1 Price on request