EPA Method 548.1 Internal Standard Back Catalog number: 30078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PCB-A10-CS1,2,3,4 Individual Calibration Solutions, 200ul, nonane Price on request 30094 EPA Method 551Mix “A” Price on request DF-1238-S 1,2,3,8-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request