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I. Overview
The acid value, also known as the acid number, is a critical parameter used to measure the amount of free fatty acids present in oils and other substances. Specifically, it represents the number of milligrams of potassium hydroxide (KOH) required to neutralize the free fatty acids found in one gram of oil. In fresh or refined oils, the acid value is typically low. However, if the oil is improperly stored or handled, the acid value can increase over time. As a result, the acid value serves not only as a quality indicator for oils but also as an important health-related parameter.
The enhanced acid value rapid measuring instrument is designed for the accurate determination of acid value in a wide range of oils, including rapeseed oil, peanut oil, soybean oil, corn oil, sesame oil, rice bran oil, tung oil, cottonseed oil, animal fat, petroleum, wax, and soap. This device eliminates the need for preparing standard alkali solutions or additional reagents, making it both safe and environmentally friendly. It is non-toxic, consumes minimal reagents, and is easy to use, allowing even new users to quickly master its operation. The instrument provides immediate results, displaying the acid value within just a few minutes. Its accuracy matches that of the current national standard method (GB/T 5530-85), ensuring reliable and consistent measurements.