KH test reading help

[Aqua Pro Builder]

I am using Salifert KH/ALK

Should take the reading right at the moment when the blue color change to a LIGHT orange color???

 

[aaron23]

Salifert uses a titration method. Add the drops carefully and swirl at each drop. There should be 1 drop that entirely changes the color and that is the end point. when it changes to an orange/red or pink color, the point at which you no longer see blue

 

[tommy818]

simple test aarons on the money