Trichlorfon, 100 µg/ml, Acetonitrile, 5ml

4-tert-Octylphenol EO Kit (EO=0-9) ,,,1mL,

4-n-Butylbiphenyl, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 37909-95-8

Sulfur (S)