EPA Method 524.3 - Surrogate Standard Back Catalog number: 95489 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11967.41-K-ME Digoxin,1000 µg/mL,MeOH,1mL, Price on request 59647 Phosphate (PO43-) as PO4 Price on request 674646 Melamine, 250mg Price on request