EPA Method 502/524 Fortification Solution

Trimethoprim, neat, Solvent-neat, Unit 100mg, # of units-, Cas.no. 738-70-5

2,4,5,6-Tetrachloro-m-xylene, 100µg/ml in MeOH, 5ml

Methyl 9-trans-tetradecenoate, 1000ug/mL in IO, 1m