Josamycin, 10 µg/ml, Acetone, 5ml

Acetamipid-d3 (N-methyl-d3) (mixture of isomers),100 µg/mL,acetonitrile,1mL,

Potassium (K), 1000µg/ml in 2%-HNO3/Water, 100ml

Bis(2-ethylhexyl)-3,4,6-tribromo phthalate,50 µg/mL ,toluene,1mL,