GB/T 10468-1989 specifies the method for determining the pH value of fruit and vegetable products. For all kinds of fruit and vegetable products, the pretreatment method of samples is stipulated to ensure the accuracy of testing. Appropriate pH measuring instruments, such as acidity meters, are used to determine the pH value of treated samples. This standard provides a standardized process for judging the acid alkalinity of fruit and vegetable products, helps to evaluate the quality, freshness and processing characteristics of products, and is widely used in fruit and vegetable production, processing, sales and other links, providing an important basis for mass control in related industries.