EPA Method 525 Surrogate Standard Back Catalog number: 93971 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EPA-513CSSB Alternative Cleanup Standard Spiking Solution, 1.2ml, nonane Price on request 678009 Terbufos-sulfone, 100 µg/ml, Toluene, 1ml Price on request PTBX 2,3,5,6-Tetrabromo-p-xylene, 1.2ml x 50ug/ml , toluene Price on request