Materials used in food and beverage processing must resist cleaning agents, acids, and food-grade chemicals without contaminating the product. This chart compares the most common FDA/EU food-contact approved materials.
A = Excellent B = Good C = Limited D = Not Recommended
PTFE and Stainless Steel 316 are both widely approved for food contact. PTFE is rated A (excellent) for nearly all food-related chemicals. SS 316 offers excellent resistance to cleaning agents and most food acids. The choice often depends on temperature and mechanical requirements.
Can HDPE be used with acidic foods?
Yes, HDPE has good resistance to most food acids including citric acid, acetic acid (vinegar), and lactic acid at room temperature. It is widely used for food storage containers and beverage bottles.
