標準號：ISO 11289-1993
中文標準名稱：密封容器中的加熱食品 pH值的測定
英文標準名稱：Heat-processed foods in hermetically sealed containers; determination of pH
標準類型：X04
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：X04
國際標準分類號：67.080.01
適用范圍：The principle of the method specified is preparing the test sample according to the class to which the product to be examined belongs, and measuring the potential difference between a glass electrode and a reference electrode immersed in the test sample. Applies to four classes of product: 1. homogeneous products with a liquid or thick texture, or products exhibiting a large liquid or thick phase; 2. homogeneous pastes or heterogeneous products for which homogenization is necessary; 3. heterogeneous products with large solid components; 4. products whose liquid phase mainly consists of oil or a water/oil emulsion.