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Caustic Soda is Sodium Hydroxide (NaOH). It is an effective pH modifier for aqueous systems.
Potassium Hydroxide or Caustic Potash (KOH) is a basic alkali. Its advantage over caustic soda (NaOH) is the increase of K+ ions while providing pH control.
Soda ash is inexpensive and used as an economical method for removing soluble calcium.
Citric Acid (C6H8O7) is a weak organic acid. It is used to remove calcium when drilling cement to reduce the potential of cross linking polymers (Xanthan and others) from iron.
Sodium Bicarbonate is sodium hydrogen carbonate (NaHCO3), used in water-based mud as a source of bicarbonate ions to precipitate calcium. It also will reduce pH.
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