Purity FG with Microl from Petro-Canada is an industrial-strength, food-grade lubricant with an antimicrobial preservative registered by the US EPA for use in food-grade lubricants. The lubricant is also registered with NSF International. It is available as a grease, hydraulic or gear fluid and is proven in lab testing to help protect the lubricant from degradation due to microbes, says the company.

Petro-Canada; 800-268-5850; www.petro-canada.com