There are many useful synthetic fertilisers containing nitrogen, phosphorus and potassium. (NPK Fertilisers). Fertilisers containing nitrate ions (NO 3-) not only contain an essential nutrient ...

Use this medication as directed by your doctor/dentist, usually twice daily (in the morning and evening). Do not swallow the medication. Make sure to brush all sensitive areas of the teeth. Use ...

Three bottles of sulfuric acid, acetone and a "white substance labeled potassium nitrate" can be seen in one of the documents, which also mention a "burner with white residue," a thermometer ...