Luster Leaf 1609 CS Rapitest Soil Tester Luster Leaf 1609 CS Rapitest Soil Tester Features: 5 color-coded soil tester in test tubes and a color chart 10 tests total 4 tests for pH levels, tests 2Â for Nitrogen, 2Â for Potash tests for Phosphorus, 2Â for Carded tests