ENVIRONMENTALLY FRIENDLY. CFIA APPROVED. Protocol K-251 is a phosphate-free, low foaming, industrial dishwashing detergent that utilizes a unique combination of highly biodegradable ingredients. These ingredients work synergistically to suspend and sequester soils while cutting through the toughest grease. Protocol K-251 may be used in high or low-temperature dish machines. For specific use in food plants, see directions.