Easy to Read! By Bob A on 10/19/11
Bob A would recommend this product to a friend
Ok, when i first got this and saw that it took 9 minutes for the color to develop, I got a little peeved. But when I saw how easy it was to select the color representing the nitrates ppm, I quickly dismissed how long it took. I test nitrates first, then go about testing mag, cal, phos, and alk. By the time I am done with all those, the nitrates are ready to read. if you can kill 9 minutes waiting for the test to complete, its well worth buying this product.