Tris(4-tert-butylphenyl) phosphate, 1.2ml x 50ug/ml, toluene

Metamitron, 10 µg/ml, Acetonitrile, 10ml

2,3,4,5,6-Pentachlorophenol-13C6, 1000µg/ml in Isopropanol, 1ml

Sildenafil citrate,1000 µg base/mL,MeOH,1mL