Internal Standard Back Catalog number: 93185 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95020 BTEX + MTBE & Styrene Price on request 680962 Fipronil carboxamide, 100 µg/ml, Ethyl acetate, Price on request C14283700 Imidacloprid, 100mg Price on request