Phenol, unstabilized, ReagentPlus(R), >=99%

Barium chloride dihydrate, ACS reagent, >=99%

Aluminum potassium sulfate dodecahydrate, ACS reagent, >=98%

Sodium hydrogencarbonate, -40-+140 mesh, >=95%

beta-Cyclodextrin, produced by Wacker Chemie AG, Burghausen, Germany, >=95.0% (HPLC)

Citric acid, anhydrous, free-flowing, Redi-Dri(TM), ACS reagent, >=99.5%

Potassium phosphate monobasic, anhydrous, free-flowing, Redi-Dri(TM), ACS reagent, >=99%

Graphite, flakes, 99% carbon basis, -325 mesh particle size (>=99%), natural

Calcium acetate hydrate, ReagentPlus(R), >=99% (titration), powder

Potassium tetraborate tetrahydrate, ReagentPlus(R), >=99.5%

Trizma(R) base, anhydrous, free-flowing, Redi-Dri(TM), >=99.9%

Sodium sulfate, ReagentPlus(R), >=99.0%