This easy to use Soil Testing Kit contains everything you need to test the pH and the levels of Nitrogen, Phosphorous and Potassium (N:P:K) of your soil. pH describes how acid or alkaline your soil is. 7 is neutral, above means alkaline whilst readings of below 7 mean acidic conditions. Testing your Nitrogen, Phosphorous and Potassium levels will highlight any deficiencies, so appropriate fertilisers etc can be applied prior to planting etc. Different plants like different conditions i.e. Rhododendrons like acid conditions, so knowing your soils pH means you can adjust the pH accordingly. Nitrogen is essential for a lush green lawn, so testing for Nitrogen will allow you to identify if a lawn food high in nitrogen should be applied. This kit consists of 2 x testing tube, testing powders, testing solutions for each test, a scoop and filter. Simply add dried soil to the tube / filter, add a scoop of powder and the appropriate testing solution for each test and then compare the colour to work out the results for your soil. There is enough powder and solution for approx 40 different tests.