Sanitisation
Definition
The process of reducing microorganisms on food contact surfaces and equipment to safe levels, a fundamental component of food manufacturing hygiene programs.
Key Takeaways
- •Sanitisation is the reduction of microbial contamination on food contact surfaces to safe levels — it follows cleaning, not replaces it
- •FSANZ Standard 3.2.2 requires food contact surfaces to be sanitised at a frequency that prevents food contamination
- •The two-step process is: clean to remove soil, then sanitise to reduce microbial load — sanitisers are ineffective on dirty surfaces
- •Chemical sanitisers must be used at the manufacturer's specified concentration — too weak is ineffective, too strong may contaminate food
- •Sanitisation effectiveness should be verified periodically through ATP swabbing or microbiological environmental monitoring
Regulatory Source
- Standard 3.2.2— Food safety practices — food contact surfaces and equipment must be sanitised to reduce microorganisms to safe levels
- Standard 3.2.3— Food premises and equipment — surfaces must be designed to be effectively cleaned and sanitised
Last verified against current standards: April 2026
Regulatory authority: Food Standards Australia New Zealand
What is Sanitisation?
Sanitisation is the reduction of microorganisms on food contact surfaces and equipment to a level that is safe for food production — a level that does not constitute a public health risk. Under FSANZ Standard 3.2.2, food businesses must ensure food contact surfaces are clean and, where necessary, sanitised. Standard 3.2.3 requires food premises and equipment to be designed so that they can be effectively sanitised.
Sanitisation is distinct from cleaning. Cleaning removes visible food residues and organic matter using detergent and physical action. Sanitisation reduces the surviving microbial load to safe levels using heat or chemical sanitisers. Both steps are required: a surface that has not been cleaned cannot be effectively sanitised, because organic matter physically shields microorganisms from the sanitiser.
Sanitisation Methods
Thermal sanitisation: Using hot water (typically above 77°C for a defined contact time, e.g. 30 seconds) or steam to kill microorganisms. Common in commercial dishwashers and some inline CIP (Clean-in-Place) systems. Effective for heat-stable equipment but unsuitable for materials that cannot withstand high temperatures.
Chemical sanitisation: Using approved food-grade sanitisers such as quaternary ammonium compounds (quats), hypochlorite (bleach-based), or peracetic acid. Each sanitiser has specific requirements for concentration (too low is ineffective; too high leaves unacceptable residues), contact time, surface temperature, and water hardness. Always follow manufacturer's instructions and verify with a test kit.
No-rinse vs rinse-required sanitisers: Some food-grade sanitisers are approved for use at specified concentrations without a final water rinse (reducing the risk of recontamination from rinse water). Others require a final potable water rinse to remove residues. Your cleaning procedure must specify which type you are using and whether a rinse step is required.
Sanitisation in Practice for Australian Food Manufacturers
What triggers a sanitisation requirement? Standard 3.2.2 requires sanitisation of food contact surfaces between uses for ready-to-eat food, after handling raw meat or poultry, and whenever contamination may have occurred. High-care and high-risk production environments (where ready-to-eat food is produced) require rigorous documented sanitisation procedures validated for effectiveness against target organisms.
Common mistakes:
Applying sanitiser to a dirty surface. This is the most common sanitisation failure. If the preceding cleaning step did not remove all organic matter, the sanitiser cannot achieve the required log reduction. The clean-sanitise sequence is not optional.
Using the wrong concentration. Diluting a sanitiser too much to save cost results in ineffective treatment. Over-concentrating it leaves residues that are unsafe for food contact. Use a calibrated dispenser or test strip to verify concentration before every use.
No contact time. Spraying sanitiser and immediately wiping it off does not achieve sanitisation. The sanitiser must remain wet on the surface for the manufacturer-specified contact time — typically 30 seconds to two minutes depending on the product.
Not validating the sanitisation procedure. Has your cleaning and sanitisation procedure actually been shown to achieve an acceptable level of microbial reduction? ATP swab testing and microbiological surface swabs can validate that your procedure is working — and identify surfaces or equipment components that are being missed.
Worked example: A Queensland bakery uses a quaternary ammonium sanitiser on all food contact surfaces after cleaning. Their SOP specifies 200 ppm concentration, 60-second contact time, and no rinse. During a self-audit, the QA manager uses a quat test strip and finds the dispenser is delivering 80 ppm — well below the effective level. Investigation reveals the dispenser dosing tube has a partial blockage. The dispenser is cleaned and recalibrated, and the SOP is updated to require weekly concentration verification with a test strip.
How Batchbase Supports Cleaning and Sanitisation Records
Batchbase allows you to document your cleaning and sanitisation schedules with the specific procedure for each surface or piece of equipment, including the sanitiser product, target concentration, contact time, and rinse requirement. Completed tasks are logged with date, time, and operator, creating the records that demonstrate your sanitisation program is being followed consistently.
Related Standards and References
- FSANZ Standard 3.2.2 — Food safety practices (cleaning and sanitising, Division 5)
- FSANZ Standard 3.2.3 — Food premises and equipment (design requirements supporting sanitisation)
- FSANZ food standards code
Related Terms
Food Safety Program
A documented system based on HACCP principles that identifies food safety hazards and establishes controls to manage them, required for most food businesses in Australia.
Good Manufacturing Practice
GMP — a system of processes, procedures, and documentation that ensures food products are consistently produced and controlled according to quality and safety standards.
HACCP
Hazard Analysis and Critical Control Points — a systematic preventive approach to food safety that identifies physical, chemical, and biological hazards in production processes and designs measures to reduce them to safe levels.