Fatty Acid Tester we manufacture holds a huge demand in Global market. Sample free fatty acids in the edible oil is nothing but the acidity of the oil (pH of the oil). Free fatty acid having free H+ ion is responsible for shifting the pH value in the lower side. This pH of the edible oil is treated by pH indicator; the color shift is measured by spectrophotometer. The absorption of the light is proportional to the concentration of the free fatty acid in the edible oil. , It is possible to carry out a test using micro-quantities of sample and can be applied even to fat substances that have a difficult extraction process.