For industrial, institutional and food plant use. For general stainless steel vat and pipe cleaning. Can be diluted up to 500:1 depending on the severity of soil. Circulate in stainless steel vats and piping for at least 15 minutes. A rinse of potable water through the same system for at least 15 minutes followed by draining and a second rinse of at least 10 minutes is recommended. Accepted for use by the Canadian Food Inspection Agency (CFIA) Sodium Hydroxide 50%