EPA Method 8121 Surrogate Standard Back Catalog number: 81204 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended B4IPPPP Bis(4-isopropylphenyl) phenyl phosphate, 1.2ml x 50ug/ml, toluene Price on request 72819 Di-n-octyltin dichloride, 1000µg/ml in MeChl, 1ml Price on request 93678 EPA Method 8270 Additional Analytes Price on request