EPA Method 526 Surrogate Standard Back Catalog number: 93187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675679 Quinmerac, 100 µg/ml, Methanol, 5ml Price on request 11923.17-K- ME Bumetanide,1000 µg/mL,MeOH,1mL, Price on request XA13120000IO Endosulfan (alpha and beta), 100 ng/µl, 1ml Price on request