Phosphonates
Aminotris Methylene Phosphonic Acid, ATMP
Effective in non-halogenated systems
Effective calcium carbonate scale control
(Several manufacturers and trade names)
Phosphonobutane Tricarboxylic Acid, PBTC
High performance calcium carbonate threshold inhibitor
Effective calcium carbonate scale and corrosion
Protection
(Several manufacturers and trade names)
Hydroxy Ethylidene Diphosphonic Acid, HEDP
Calcium carbonate threshold inhibitor
Effective calcium carbonate and corrosion protection
(Several manufacturers and trade names)

