Chlorine neutralizer is a chemical used to make chlorine harmless.
Example:
John’s pool had too much chlorine for safety, so he had to add Chlorine Neutralizer.
CHLORINE NEUTRALIZER:
A chemical used to make chlorine harmless. Used in test kits to counteract the bleaching effect of the chlorine or bromine in order to increase the accuracy of pool water tests. Sold as chlorine and bromine neutralizer, it is used to destroy excessive amounts of chlorine or bromine so the high levels will not affect swimmers.
Example: