EPA Method 502/524 Fortification Solution Back Catalog number: 34005 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71103 Dimethyl endothall Price on request 0791.14-K-IO 9,10-Dihydrophenanthrene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 776-35-2 Price on request XA17875000AL Trimethoprim, 100μg/mL in Acetonitrile, 1ml Price on request