This inexpensive kit allows gardeners to test their soil for ph (acid/alkaline soil) Nitrogen, Phosphorus and Potassium, all of which are key elements needed by plants for healthy growth. The instructions are clear and simple to follow, you take some garden soil, add water, shake it up, leave to settle, draw off a measured quantity of liquid, add two compounds, shake, and then compare the colour of the liquid with colour charts in the instruction booklet to determine what sort of soil it is and record results.
My test, carried out over several areas of our garden, revealed that we have poor soil, devoid of much nutrient and rather alkaline. Therefore I need to feed it with fertiliser and try to up the acidity, since many plants like acid conditions. Fun to use, one feels like a true scientist! Comes in a great pack, very compact, very easy to store, with sufficient chemicals for a large no. of tests.