How to Detect Adulteration of Peppermint Oil With Olive Oil
- 1). Place one drop of essential on blotting paper.
- 2). Wait 3-5 minutes for the oil to evaporate.
- 3). Check to see if an oily residue remains on blotting paper.
- 4). Oily residue means that the essential oil has been diluted with a vegetable oil such as olive oil.
- 5). No oily residue means that essential is pure and unadulterated by vegetable oil.
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