TA Test - Me vs. Pool Store(s)

[waterbear]

Hmmm...I'm confused, My Taylor kit says to add R-0009 until it changes from green to red. Why the difference?

Taylor has a LOT more info on their website. This is where it says to keep adding drops until one more drop doesn't produce further change and then not count the last drop.
http://www.taylortechnologies.com/Ch...P?ContentID=35