The Ricca Chemical phosphorus standard with composition of 99.56% water and 0.44% potassium dihydrogen phosphate is suitable for use in research and laboratory. It can be stored at a temperature of 15 to 30 degree C.

The Ricca Chemical nitrite nitrogen standard with a composition of 99.36% water and 0.64% potassium nitrite, is suitable for use in food preservation and biochemistry industries. It can be stored at a temperature of 15 to 30 degree C.

The Ricca Chemical nitrate nitrogen standard with a composition of 99.28% water and 0.72% potassium nitrate, is suitable for use in agricultural applications. It can be stored at a temperature of 15 to 30 degree C.

The Ricca Chemical phosphate phosphorus standard with composition of 99.96% water and