Ammonia as N

1,2-Benz[a]anthraquinone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 2498-66-0

2,4-Dimethyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 31317-18-7

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