EPA Method 551.1 Performance Check Sol’n

4,6-Dihydroxypyrazolo[3,4-d]pyrimidine-13C,15N2, 1mg

1H,1H,7H-Perfluoroheptan-1-ol , 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 335-99-9

ICP Mix