Have you used pH meter? I’m not but I am kind a curious on how this pH meter works. I look up online and find out the advantages and disadvantages of using pH meter and this is what I found out. Advantages: they give you a numerical value of the pH, pH meters can give you the exact pH and they give you an idea as to how acidic and basic the substance is. Then the disadvantages: the product are too expensive, pH papers only give you a rough estimate and pH meters need to be calibrated. I wonder why? Hmmm anyhow, if you want to buy pH meters, look no further you can find all the top pH meters you need at affordablephmeters.com for a very affordable price. Shop now at H&C pH Meter Systems!