I thought only aqueous solutions could be tested for pH?🤔..is the following possible? (dilute the oil w/H20)
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"I took a small quantity of used oil and put it into a small container. I added water and shook the two liquids vigorously. Acidic compounds would have a tendency to migrate out of the oil and into the water layer. Then I took a piece of common pH measuring paper and dipped it into the water layer. The presence of acidic compounds would be indicated by a color change on the paper. I've never gotten a positive test, either because the test method is flawed or because there were no unneutralized acids in the oil. Is anyone familiar with the proper method of pH measurement in oil? Does this sound like a valid test method?"
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"I took a small quantity of used oil and put it into a small container. I added water and shook the two liquids vigorously. Acidic compounds would have a tendency to migrate out of the oil and into the water layer. Then I took a piece of common pH measuring paper and dipped it into the water layer. The presence of acidic compounds would be indicated by a color change on the paper. I've never gotten a positive test, either because the test method is flawed or because there were no unneutralized acids in the oil. Is anyone familiar with the proper method of pH measurement in oil? Does this sound like a valid test method?"
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