Chain Guard® CG-FS-PC-100-H1 food grade proofer chain oil is a food Grade, US Pharmacopoeia (USP) white oil based chain lubricant specifically designed to perform in high humidity environments. PC-100 has superior metal wear resistance and will not emulsify with water, providing excellent protection against rust in humid and non-humid environments. Designed for the most demanding industrial bakery and food processing proofer chains, ChainGuard proofer chain oil is perfect for applications where NSF H1, BRC, and OSHA regulations are enforced.