Rapitest Mini 4-in-1 Soil Tester

This 4-way soil analyzer provides an accurate analysis of soil pH, moisture content, fertilizer content, and sunlight. It's an electronic meter ideal for experiments or science fair projects with plants, or for the avid gardener. The soil analyzer comes with a cleaning pad, a chart detailing the optimal levels of each element (nitrogen, etc.) for various types of plants, and a table of sunlight needs for different plants, making it a great tool for a thorough garden / soil / plant study.

Science fair project ideas using this soil tester:

• Compare natural fertilizers (compost or other organic materials) and chemical fertilizers to see the effect of each on soil pH levels and moisture levels.
• Learn about soil pollutants by testing the pH of different types of soil (containing sand, clay, peat moss, compost, or fertilizer) before and after adding a chemical pesticide.
• Some plants produce flowers in different colors based on soil pH - use this tester on hydrangeas, for example.
• Test what happens when you provide more or less drainage for potted plants (make sure they're all the same type of plant).