​Sodium formaldehyde sulfoxylate (SFS) is used as a preservative in many food products. It can cause cancer in humans and is toxic to both the environment and human health. In this article, we will teach you how to measure SFS content in food products. What are Sodium Formaldehyde Sulfoxylate (SFOS) and Sodium Bisulfite (SB)? SFOS and SB are two types of formaldehyde sulfoxylate (FoS) that are...