Bis(4-hydroxyphenyl) sulfone, 1.2ml x 50ug/ml, methanol

Citric acid [0.3% wt]

Sulfachloropyridazine, 100 µg/ml, Methanol, 1ml

Dibenzo[2,3;10,11]peryleno[1,12-bcd]thiophene, 20µg/mL, Solvent-chlorobenzene, Unit 1mL, # of units-1, Cas.no. 196-23-6