EPA Method 8061A Matrix Spike Solution

Carvedilol-d4 (ethyl-d4), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1133705-56-2

2,4,5-Trichlorophenoxy-3,6-d2-acetic-d2 Acid, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 358731-37-0

2,3-Dichlorotoluene