Surrogate Standard Back Catalog number: 97935 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11279.20-100-AN (+/-)-Pyriproxyfen-d4 (pyridyl-d4),100 µg/mL,acetonitrile,1mL, Price on request 79263 Triclopyr Price on request 83602 Disulfoton Price on request