Discussion of effects on pH value determination of leather
Six factors affecting pH value determination was discussed,including the sample conditioning,sample preparation,extracting medium,shaking time,shaking frequency and extracting temperature.The results showed that all the other factors except conditioning had great influence on the pH determination,especially the uniform size of the sample,the control of the pH value of the extracting medium and the extraction temperature.Some suggestions were put forward to improve the accuracy and stability of the pH determination of leather.