Potassium oxalate monohydrate - K2C2O4.H2O

Potassium persulfate (Potassium peroxydisulfate) - K2S2O8

Potassium Sodium Tartrate KNaC4H4O6.4H2O

Potassium Sulfate K2SO4

Potassium Thiocyanate KSCN

Selenium Se

Silicagel xanh CP

Silicon Dioxide SiO2

Silver Nitrate AgNO3

Silver Sulfate Ag2SO4

Sodium (kim loại) Na

Sodium Acetate CH3COONa