PCB No. 118, 100µg/mL in Isooctane, 2ml

1,1,1-Trichloroethane-d3,neat,neat,25mg

Benzyl Fentanyl-d3, 1mg

EN 15721 Internal Standard Stock Solution, procedure B 1382.2 Ethanol 16mL 8919.5 4-Methyl-2-pentanol 160µL Gives a concentration of approx. 8mg/mL