I use a Milwaukee to test the PH, and i have tried others plus the drops, all of which give different readings its very confusing.
Greenthing Reviewed by Greenthing on . different brand pH strips... I have two brands of pH strips pHion and some from Indigo instruments pHion 2 colored squares range 4.5-9.0 .25 unit increments use for saliva or urine Rating: 5