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Open Access Publications from the University of California

What Is pH and Why Do We Care?

  • Author(s): Singer, M J
  • George, H A
  • Childers, C D
  • Merrill-Davies, M L
  • et al.

pH is a system for rating acidity and alkalinity. It is a critical factor in farming, gardening, natural resource work, and many other fields. Here is a brief, straightforward explanation of what pH is, what it means, and why it matters to all of us.

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