digi meters are great

truncheon style wands are the best style of digi meters

in my eyes its best to have both a digi and i prefer the general hydroponics liquid drops, but a high tech and low tech is best to compare readings
texas grass Reviewed by texas grass 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