(Phenolphthalein pH Indicator in a glass dropper bottle) Price Reduced!
For Solid Soaps: Be sure your liquid soap isn't "lye heavy". Phenolpthalein changes color at the correct acid/base (pH) level of properly made soap.
For Liquid Soaps: Add a drop to a diluted sample of freshly made liquid soap to measure and confirm proper ‘neutralization’ when using Borax or Boric Acid as neutralizer.
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