Rangeball
06-13-2006, 04:46 PM
Isn't that what the "chlorine neutralizer" drop is for before you add the PH test stuff?
JohnT
06-13-2006, 04:57 PM
Yes it is, but all kits don't have that, and it isn't perfect.
waterbear
06-13-2006, 11:25 PM
The best reagents can only neutralize the chlorine to about 15 ppm. the sodium thiosulfate (chlorine neuralizer) itself can raise the pH and give inaccurate results if too much is added..