EPA Method 508 Surrogate Standard Back Catalog number: 19042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73259 Sitagliptin Price on request DFP-CVS-B10 PCDD/PCDF/PCB Calibration Kit, 7 x 200ul, nonane Price on request 82723 EPA Method 8270C Pesticide Mix #25 Price on request