<https://halogensys.com/orp-vs-amperometry/#primaryimage>
<http://schema.org/caption>
"Science behind ORP or Oxidation Reduction Potential. This is a way to measure a chemical oxidizes or reduces another chemical substance. Oxidation is the loss of electrons by an atom, molecule, or ion"
<https://halogensys.com/ja/orp-vs-amperometry/>