Alkaline salts, such as sodium bicarbonate, potassium bicarbonate, or potassium citrate, will increase pH. Thickeners include sodium alginate, carrageenan, gelatine, sodium bicarbonate, tetrasodium pyrophosphate, and alginic acid. Metabolic acidosis is treated by administering sodium bicarbonate. The osteoblast then deposits calcium phosphate which is hardened by hydroxide and bicarbonate ions. Ammonia may be conveniently deodorized by reacting it with either sodium bicarbonate or acetic acid. Common sources are sulfate of potash, potassium bicarbonate, monoammonium phosphate, etc. The general use of sodium bicarbonate or calcium is not recommended. This acid immediately dissociates into hydrogen and bicarbonate ions. Alkalization of the urine with acetazolamide or sodium bicarbonate is controversial. Household chemicals like sodium bicarbonate (baking soda) have been suggested, without evidence for their effectiveness. Within these cells, carbonic anhydrase converts the substances into bicarbonate and hydrogen ions. This can be accomplished by additives such as sodium bicarbonate to raise pH. The hot mineral water that contains bicarbonate and calcium ions has the most optimal range. This can also be remedied by the ingestion of sodium bicarbonate (NaHCO). It is about twice as effective in fire suppression as sodium bicarbonate.