Equipment, Lighting and Ventilation Standards

Safe Equipment Materials and Toxic Metal Hazards

As a manager, you must select food-contact surfaces that are durable, corrosion-resistant, smooth, and easy to clean. Food-contact surfaces must generally be nonabsorbent, though the FDA Food Code provides specific exceptions for materials such as certain wood and cast iron. Food-contact surfaces must resist corrosion, chipping, pitting, crazing, and scratching; apply the Food Code’s separate requirements to non-food-contact surfaces. Certified sanitation equipment bearing an ANSI-accredited mark, such as NSF, is deemed to meet the Food Code's material and design rules. While this mark helps demonstrate compliance, it is not universally required by law. Never assume residential-grade equipment is acceptable for commercial operations; you must verify that it satisfies sanitation criteria and is accepted by your local regulatory authority.

Selecting the wrong materials can cause chemical foodborne illness because toxic metals leach into food when unapproved metals contact acidic foods. Copper and brass generally must not contact food with a pH below 6.0, such as citrus juice, vinegar, or tomato sauce, except under the Food Code’s specified beer-brewing and traditional-confectionery conditions. The Food Code permits copper and copper alloys to contact ingredients below pH 6 during the pre-fermentation and fermentation steps of beer brewing, and to contact food below pH 6 in traditional confectionery if the food is subsequently cooked to at least 200°F (93°C). Additionally, carbonators present a severe risk: if carbonated water contacts copper piping due to backflow, it leaches copper into the beverage line, creating an acute chemical poisoning hazard. You must ensure that if a dual check valve with an intermediate vent is used on a carbonator, it is installed upstream of the carbonator and downstream of any copper in the water supply line, equipped with the required upstream screen.

Other metal and utensil materials carry specific restrictions that managers must enforce. Galvanized metal must not be used for utensils or equipment surfaces that touch acidic food, although the Food Code does not prohibit galvanized metal solely because a food is moist. Food-contact pewter may not contain more than 0.05% lead, and solder or flux used as a food-contact surface may not contain more than 0.2% lead. Ceramic, china, crystal, and decorative utensils must meet applicable Food Code lead limits, meaning not all pewter or crystal is categorically prohibited. Cast iron is permitted as a cooking surface or in serving utensils only when service is part of an uninterrupted process from cooking through service, provided it remains clean and in good repair. Hard maple or an equivalently hard, close-grained wood is allowed for cutting boards, blocks, and bakers' tables if kept smooth and cleanable, but single-use wooden items like toothpicks and disposable chopsticks must be discarded after one use. Finally, glass thermometers must never be used to measure food temperatures unless encased in a shatterproof sheath.