Internal Standard Back Catalog number: 95665 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3316.10-K-ME Bentazone,1000 µg/mL,MeOH,1mL Price on request 31056 EPA Method 552.1 - Surrogate Standard Price on request 674572 D6-Benzyldimethyldodecylammonium iodide, 10mg Price on request