To use one, you mix some soil with water, then dip the paper strip into the mixture, which will cause it to change color depending on the pH level. (Don’t worry, the test will come with a chart ...

Conserving Growing MethodWhat Is Hydroponics?Hydroponics is a soil-free gardening technique that greatly reduces water consumption while growing plants using nutrient-rich water.

Its useful life, however, is limited since it is consumed as it reacts with acid. IPI tests for alkali reserve of paper by soaking a sample in water, in the same manner as for the pH test, and then ...

New Jersey’s the Passaic River and the Molly Ann Brook River have been a heavily polluted industrial waterway, for more than ...