EPA Method 524 & 624 - Internal Standard Back Catalog number: 19794 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679830 3-(Methylphosphinico)propionic acid, 100 µg/ml, W Price on request ACQ-AQ13-015 Ethanol standard in water,1.3g/L,water, 1.5mL Price on request 70102 2,4’-DDT, 1000µg/ml in MeOH, 1ml Price on request