Endosulfan sulfate (13C9), 100µg/mL in Nonane, 1,2 Back Catalog number: CLM-7531-1.2 Availability: In the manufacturer's stock Price on request - + Recommended 81203 EPA Method 8121 Internal Standard Price on request S-4157-1ML Performance Control Mixture 4 Analytes each Wt.% as listed; units: 1x1mL, 5x1mL neat Name Wt. % Name Wt. % n-Hexadecane 75.0 Tetralin 3.0 Naphthalene 2.0 Price on request BB-209 Decabromobiphenyl, 1.2ml x 50ug/ml, nonane Price on request