Welcome to our forum.
I had the same problem checking our PH levels. I finally invested in a electronic PH meter that is calibrated to +- .01 Sure takes the guess work out of it. A little pricey ($100 or so) but sure makes it easy. I have found the Taylor Test Kit I bought from Doc's site however gives very close readings to the electronic meter. And buying from Doc you do get the freshest chemicals.
Tell me more about the electronic gizmo. What is it called? Who makes it? Where can I buy one? Is it worth it?As far as the Taylor kit is concerned, for those that are using it, how often do you buy fresh chems? How can you be sure the chems are fresh? Besides Ph, what does it measure? Thanks,Bill