CFIA APPROVED. Protocol K-151 contains a readily biodegradable surfactant package with excellent wetting and emulsifying properties. The readily biodegradable builders in Protocol K-151 sequester and disperse soil particles to prevent stain re-deposition. This innovative combination of surfactants and builders results in a detergent that removes stains from various fabrics. Protocol K-151 does not contain dyes or fragrances, making it the right choice for people with sensitivities. For use in food plants, see directions.