Soil Chemistry and Cleaning Response
Dairy soil is compositionally dominated by three fractions, each requiring a different chemistry:
Soil component | Removal chemistry | Mechanism |
Milk protein (casein, whey) | Alkaline (NaOH 1–3%) | Alkaline hydrolysis of peptide bonds |
Milk fat | Alkaline + surfactant | Saponification + emulsification |
Mineral | Nitric or phosphoric acid 1–2% | Acid dissolution of Ca₃(PO₄)₂ and CaCO₃ |
Thermophilic biofilm | Chlorinated alkaline, PAA | Oxidative disruption + surfactant lift |
A standard CIP cycle alternates alkaline (organic removal) and acid (mineral removal) with intermediate rinses, terminated by sanitize.
The chemistry catalog and dosing pump matching for each family is documented in the Milton Roy Water Treatment Chemicals Guide.


