Most cleaning problems in food plants come from a mismatch between the soil and the chemistry. A detergent that removes fat easily may do almost nothing to mineral scale, and an acid that dissolves scale will leave a greasy film behind. The first question is never “which product is strongest” but “what is the soil made of”.
Food soils fall into two broad families. Organic soils such as fats, oils, proteins and sugars respond to alkaline chemistry. Inorganic soils such as hard-water scale, milkstone and mineral deposits respond to acid chemistry. Chlorinated, neutral, foaming and low-foam products are variations that suit particular surfaces, methods and plant schedules.
This guide maps common soils to chemistry, explains where foaming and low-foam products fit, and sets out how to rotate acid and alkaline cleaning safely. It is written for plant managers, QA teams and hygiene supervisors who choose products or set cleaning schedules.
Map the soil to the chemistry
Animal and vegetable fats and oils: alkaline detergent, which saponifies and emulsifies fat; warm water helps.
Proteins (meat, poultry, milk, egg): alkaline detergent; chlorinated alkaline products help break down protein films.
Sugars and starches: largely water-soluble, removed with warm water and an alkaline or neutral detergent; burnt-on sugar needs stronger alkaline action.
Milkstone (a mix of protein, fat and minerals): alkaline clean first to remove the organic part, then an acid step for the mineral part.
Hard-water scale and mineral deposits: acidic detergent.
Light general soil on floors, walls and utensils: neutral or mild detergent.
Alkaline cleaners
Alkaline detergents are the workhorse of food plant hygiene because most food soil is organic. They come in high-foaming versions for open surfaces and low-foaming versions for recirculating systems and machines. Products with chelating or sequestering agents keep hardness minerals in solution, which helps in hard water and reduces the scale that alkaline products can otherwise leave behind.
Alkalox FoamHigh Foaming Alkaline DetergentHigh-foaming alkaline detergent engineered with advanced surfactant blends to create a high foam that clings to surfaces. Ideal for use in the food industry, including dairies, meat processing plants, and preserved food facilities. Tackles tough, industry-specific soils.
Clastox FoamHigh Foaming Alkaline DetergentHigh-foaming alkaline detergent with advanced surfactants for high foam production. Excels at removing food industry soils like dairy, meat, and preserved foods due to its excellent wetting, chelating, and degreasing properties.
Clastox PlusLow Foaming Heavy Duty Alkaline DetergentPotent alkaline liquid detergent specially engineered to meet the rigorous demands of food processing plants. Its advanced detergent systems not only penetrate deeply into stubborn soils, animal fats, and milk residues, but also provide exceptional scale prevention and hard water resistance, ensuring that your cleaning operation runs smoothly and efficiently. Designed for heavy-duty applications.
Acidic cleaners
Acidic detergents dissolve the mineral deposits that alkaline products cannot touch: hard-water scale on tanks and walls, the mineral layer of milkstone, and dull films on stainless steel. In open plant cleaning a high-foaming acid gives the contact time needed on vertical surfaces. For an acid step inside a CIP circuit, the range does not include a dedicated acid CIP detergent, so ask our technical team for advice suited to your system.
Chlorinated, neutral, foaming and low-foam options
Chlorinated alkaline: combines alkaline cleaning with chlorine, useful for protein films and daily cleaning in meat, poultry, dairy and vegetable processing. Never combine with acids.
Neutral or alkali-free: for general cleaning of floors, walls, utensils and equipment where strong alkali is not needed or not wanted.
High-foaming: for open surfaces, applied by foam lance so the product clings and stays wet.
Low-foaming: for CIP, COP tanks, tray washers and any recirculating or pumped system.
Chlorox FoamChlorinated Alkaline CleanerChlorinated alkaline cleaner with high chlorine concentration, ideal for daily cleaning in the food industry. Its exceptional foaming ability effectively removes various soils in food processing, meat, dairy, and vegetable processing. Functions as a 2-in-1 cleaner and sanitizer.
Neutrox FoamMultipurpose DetergentVersatile, colorless, odorless, and multi-purpose detergent that effectively cleans various surfaces in food processing industries, dairies, poultry, and more. Its alkali-free formulation provides a convenient solution for many general cleaning applications like floors, walls, utensils, and equipment.
Rotating acid and alkaline cleaning
Many plants run alkaline cleaning daily and an acid clean on a periodic schedule, for example weekly, or whenever scale or a white film appears. The right frequency depends on water hardness, processing temperature and the product. Set it with your technical adviser and adjust it based on inspection. Signs that the acid step is due include a white or grey film on stainless steel, rough deposits on tank walls and slower drainage from surfaces that used to rinse clean.
Dry clean and pre-rinse to remove loose soil.
Apply the alkaline detergent first to remove fat and protein.
Rinse thoroughly so no alkaline residue remains.
Apply the acidic detergent to remove scale and mineral deposits.
Rinse thoroughly again.
Sanitise the clean surfaces, following the label for any rinse requirement.
Materials compatibility and safety
Strong alkalis can attack aluminium, galvanised steel and some soft metals, and acids can damage certain metals, grouts and coatings. Before using any product on a new surface, check the label and ask our technical team about compatibility; test on a small area where in doubt. Store acids and chlorinated products apart, keep every container labelled, and make sure operators wear the PPE specified in the MSDS.
Talk to our technical team
Tell us about your site, soils, equipment and volumes. We will recommend products and dilutions, and send pricing for bulk supply.
Frequently asked questions
Can I mix an alkaline and an acidic cleaner to save a step?
No. They neutralise each other and lose effectiveness, and mixing an acid with a chlorinated product can release chlorine gas. Apply them separately with a thorough rinse in between.
Why do I still see a white film after alkaline cleaning?
A white film is often mineral scale or milkstone, which alkaline detergents do not dissolve. An acid clean usually removes it.
Is a chlorinated alkaline cleaner a sanitiser?
Chlorox Foam is described as a 2-in-1 cleaner and sanitiser, but your hygiene plan should still define whether a separate sanitising step is needed on food-contact surfaces.
When should I choose a neutral detergent?
For light, general soil and for surfaces that may be sensitive to strong alkali. Neutrox Foam is an alkali-free option for floors, walls, utensils and equipment.
How do I know which dilution to use?
Start from the dilution on the product label and adjust within that range for the soil level. Our technical team can help you set dilutions for each area.