pH 12.45 buffer solution (230mL)

Sulfite (SO32-),1000µg/mL in Water, 3 x 20ml

2-Phenyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 104353-07-3

Perfluoroheptane sulfonic acid, potassium salt,neat,neat,10mg,