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preventing bi-metal corrosion |
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Bi-metal corrosion (also dissimilar-metal, galvanic, electrolytic or
battery-type corrosion) occurs if two or more types of metals are connected in
an electrically-conductive medium.
A closed loop, composed of two or more metals, containing conductive tap water and electrically-conductive (salty) treatment chemicals is conducive to this type of corrosion. Dielectric (insulating) unions should always be used to join dissimilar metals. SLS (sodium lauryl sarcosinate) molecules are bipolar (oppositely-charged ends) and dielectric (insulating). One end of the molecule is attracted to and adheres to the metal surface, insulating it, thus slowing corrosion. Maintain 200 to 300 ppm.
SLS,
a bi-metal
corrosion inhibitor SLS
test kit
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