There is a repair tech spreading the word that he no longer uses Dawn dish washing detergent in his ultrasonic cleaner because it leaves a microscopic layer of silicone on the instrument. This information supposedly comes from a chemist in his area who also markets valve oil. I'm having a hard time believing this because none of the chemicals on Proctor and Gamble's Dawn ingredients lists contain silicone or its precursors chlorosilanes or tetraethoxysilane.
Maybe Dr. G or someone else knowledgeable about chemistry can clear this up for me.
Maybe Dr. G or someone else knowledgeable about chemistry can clear this up for me.