EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674020 Fenuron, 10 µg/ml, Acetonitrile, 10ml Price on request L179000 Lercanidipine Hydrochloride, 10mg Price on request 677304 Dimethachlor ESA sodium salt, 100µg/ml, Acetonitrile, 1ml Price on request