Internal Standard Back Catalog number: 95665 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679256 D6-Metazachlor OA, 100 µg/ml, Acetonitrile, 1ml Price on request 10366.8-1MG Zonisamide-13C6 (ring-13C6),neat,neat,1mg, Price on request 90787 Diethyl ether, 2000µg/ml in MeOH, 1ml Price on request