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nature : organic substances, said an indicator of acidity. Yes grams and in an organic material of acidic components required mg of potassium hydroxide few. Major oil and wax for the determination. Samples said the free acid (mainly free fatty acids) content. Fresh or refined oils and waxes, low acidity. Save or improper handling will make acidity increased. Rancid oils such as the acid value than the original oil higher. When measured using potassium hydroxide aqueous titration of the samples, and Determination of saponification value. Acidity also for soap, paint, resins, plasticizers, petroleum products (including lubricants) Determination. The lubricant is to control the use of performance lubricants one of the key indicators. Acid large lubricants easily mechanical parts corrosion, but will also promote lubricants metamorphism, generation grease increased mechanical wear. Acid value is and in a test oil grams of potassium hydroxide for a few milligrams of measurement units, and in mg KOH / g said. The use of lubricants not only provides a new oil acidity, but also in the use of the provisions available to the highest acidity, such as the use of acid over, the need for the timely replacement of the new oil.
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