Norflurazon, 10 µg/ml, Acetonitrile, 10ml

Heptanedioic-2,2,6,6-d4 acid,neat,neat,500mg,

Tris(3,5-dimethylphenyl) phosphate, 1.2ml x 50ug/ml, toluene

Nitrate as NO3-, 1000µg/ml in water, 100ml