3717-1-04.4(N)(3) / Manual and mechanical warewashing equipment, using chemical sanitization (quaternary ammonium) - temp., pH, concentration, and hardness
Critical Repeat Corrected During Inspection A quaternary ammonium sanitizing solution did not meet the minimum requirements for temperature, concentration, and/or water hardness. Observed quat sanitizer over 400ppm.
To prevent pathogen growth, a quaternary ammonium sanitizing solution shall: (a) Have a minimum temperature of 75F,(b) Have a concentration as specified and as indicated by the manufacturer's use directions included in the labeling, (c) Be used only in water with 500 ppm (mg/l) hardness or less, or used in water having a hardness no greater than specified by the manufacturer's label.