2,4-D-2-ethylhexyl ester, 100mg

Irbesartan-d4 (2,3,5,6-phenyl-d4),ca. 100 µg/mL,MeOH,1mL,

15 EU PAH Cocktail , 100µg/m Lin Toluene , 1ml

Citric acid [1% wt]