La Motte Soil pH Test KitThis test is a quick, inexpensive way to monitor the approximate acidity or alkalinity of your soil. All you do is mix your soil sample with a pH reagent solution in a test tube Match the resulting color to a chart and interpret, using the tables provided Chart is graduated to increments of 1. 0 pH The kit contains materials for 15 tests Much greater accuracy can be achieved with a pH meter.