Want to know how hard your water is? How many combined minerals (calcium, iron, magnesium etc) are in your water? Adding extra nutrients to your water and want to know the saturation level? This digital tester shows you instantly how many parts-per-million (PPM) are present in your water.
Shows from 0-990 PPM
LR44 / AG13 Batteries are not included. (Found at any dollar store)
Only a PH Pen is shipped.
Simply dip the pen in any liquid for an instant reading.