Sorry I'm new here. I have two digital ph testers
One is a bluelab combo meter brand new
The other is an oak ton
I also have the liquid test kit
The problem I Am experiencing is
Both pens are showing 6.5 6.7
But the liquid test is perfectly yellow
When I used the pens to reach a 6.3 reading the drops were
Orange
I have but lockout or the beginning of it so I know there was
An issue but I'm still not convinced which is right
Both pens were calibrated at the store and both the 7 and the
4 are perfect.
Still if the pens are both showing 6.5 those drops are usually
Light green
Only thing i can think of is that the water is 60degrees at testing point
Bgprm Reviewed by Bgprm on . Problems with my ph pens Sorry I'm new here. I have two digital ph testers One is a bluelab combo meter brand new The other is an oak ton I also have the liquid test kit The problem I Am experiencing is Both pens are showing 6.5 6.7 But the liquid test is perfectly yellow When I used the pens to reach a 6.3 reading the drops were Orange I have but lockout or the beginning of it so I know there was Rating: 5