Def so much faster You cant test that fast and i dont know how many times I went did I put 2 drops in or 3. I usually get the 25 test strip kit For 10.99. If I feel the left over test strips are bad you can test them against a master test kit if there bad throw them out. But i Just use them to see what my water softness is really I use Peat Moss to soften the water. But that is a whole different thread. I take a platic contaniner and fill it with water then leave a peat moss sock in the water and a power head. When my water is at desirerd chemistry I by testing. Alkility ph softness ect. I take out the peat moss and put in a activated charcol net bag to remove any odor chemicls or visiual color. Peat moss is a natural way I find to soften water if it is to hard. Peat moss works like drift wood tannins or something.