Can You Identify All of These Items You Find at Home Depot?
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32. This is an essential gardening tool when measuring a soil's potential for hydrogen. What is it called?

Correct Incorrect A pH pen can measure the pH of water or soil, and pH literally stands for 'potential hydrogen.' A neutral pH is around 7. A pH of 1 is a very acidic solution, and a pH of 10 is a basic solution. Baking soda is basic. Lemon juice is acidic.