EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 53133 Multi-Element Solution 1 Price on request 79264 Bromoxynil Price on request 680026 D6-Omethoate, 100 µg/ml, Acetone, 1ml Price on request