Accurate measurements are essential for food safety, product quality and consistent production. Food and beverage businesses across Australia use measuring instruments to monitor cooking temperatures, refrigerated storage, ingredient quantities and processing conditions.

When these instruments provide inaccurate readings, businesses may make decisions based on unreliable information. A thermometer may indicate that food is being stored correctly even when the actual temperature is outside the required range.

Calibration helps businesses understand the accuracy of their equipment by comparing its measurements with suitable reference standards. Combined with routine checks, maintenance and clear records, it supports reliable food handling and quality-control processes.

Why Is Calibration Important for Food and Beverage Businesses? 

Food production involves measurements at many stages, from receiving ingredients to processing, packaging, storage and delivery. Reliable instruments help businesses control these activities consistently.

Calibration identifies measurement errors that may develop through frequent use, physical damage, environmental exposure or ageing. The results help businesses decide whether an instrument remains suitable or needs adjustment, repair or replacement.

Key Benefits:

1. Reliable Food Safety Monitoring: Accurate instruments help staff assess whether food handling conditions meet established limits.
2. Consistent Product Quality: Dependable measurements support repeatable recipes, processing conditions and finished products.
3. Reduced Waste: Identifying measurement errors can help prevent unnecessary disposal, incorrect ingredient quantities and rejected batches.
4. Better Audit Preparation: Organised calibration records help demonstrate how measuring equipment is controlled.
5. Improved Equipment Management: Calibration history helps businesses recognise instruments that drift or require more frequent attention.

What Are the Australian Requirements? 

Calibration requirements depend on the equipment, the food being handled and the business’s activities. Businesses should identify the requirements that apply to their operations rather than assume every instrument follows the same schedule.

A specific requirement applies to thermometers used by businesses handling potentially hazardous food. Under Standard 3.2.2 of the Australia New Zealand Food Standards Code, these businesses must have a readily accessible thermometer capable of measuring food temperatures accurately to within ±1°C.

Potentially hazardous food includes products that require temperature control to limit the growth of harmful microorganisms or the formation of toxins.

Additional equipment controls may be specified in a business’s food safety program, customer specifications or certification arrangements. Businesses should confirm the applicable requirements with their relevant food authority and review the procedures used at their premises.

Equipment That May Require Calibration

Food and beverage businesses use different measuring instruments depending on their products and processes. The calibration program should focus on equipment whose accuracy affects food safety, quality or operational decisions.

1. Probe Thermometers

Probe thermometers measure food temperatures during receiving, cooking, cooling, reheating and storage checks.

A refrigerator display measures conditions within the equipment and does not necessarily show the temperature of the food itself. Similarly, infrared thermometers measure surface temperature. A suitable probe thermometer is generally needed to assess internal food temperatures.

2. Temperature Sensors and Data Loggers

Temperature sensors and data loggers monitor conditions in cool rooms, freezers, storage areas and transport systems.

Checking their accuracy helps businesses assess whether recorded temperatures provide a dependable picture of storage and distribution conditions.

3. Weighing Scales and Balances

Scales and balances measure ingredients, portions and finished products. Incorrect readings can affect recipes, batch consistency and packaging quantities.

Businesses should select suitable calibration points across the weighing range used in their operations.

4. pH Meters

Some food and beverage processes rely on pH measurements to control acidity, fermentation or product specifications.

Where pH is important to a validated food safety process, the business should follow documented procedures for instrument calibration, routine checks and acceptance limits.

5. Pressure Gauges and Flow Meters

Pressure gauges and flow meters may be used in processing systems, liquid transfer, filtration and filling operations.

Their calibration requirements should reflect the role of the measurement, the operating range and the consequences of an incorrect reading.

6. Humidity and Other Quality-Control Instruments

Humidity meters, refractometers and other instruments may support drying, storage or product testing.

These instruments should be included in the equipment-control program when their readings influence important production or quality decisions.

How Often Should Equipment Be Calibrated?

A calibration interval should reflect the instrument’s purpose, manufacturer guidance, frequency of use, operating conditions and previous results.

FSANZ’s Safe Food Australia guidance recommends following the thermometer supplier’s advice and indicates calibration at least once every 12 months. This is guidance for thermometers, rather than a universal legal interval for every instrument used in a food business.

Equipment may need attention sooner when:

• It is dropped, damaged or exposed to unusual conditions.
• Its readings differ unexpectedly from another reliable instrument.
• A routine accuracy check fails.
• It undergoes repairs or adjustment.
• Previous calibration results show significant drift.
• Its accuracy is critical to a food safety control.

Reviewing calibration history helps businesses decide whether their existing intervals remain appropriate.

Calibration and Routine Accuracy Checks

Calibration and routine checks serve related purposes.

Calibration establishes the relationship between an instrument’s readings and reference values under specified conditions. It does not automatically include adjusting the instrument.

Routine accuracy checks help staff identify possible problems between calibrations. For example, a suitable ice-slurry check may help assess thermometer performance near 0°C. However, a check at one temperature does not establish accuracy across the instrument’s full operating range.

FSANZ guidance notes that ice-slurry and boiling-water checks can indicate whether a thermometer is working properly, while recognising that boiling temperature varies with altitude. Businesses conducting their own calibration need suitable knowledge, skills and equipment.

Maintaining Calibration Records

Calibration records provide an equipment history and help staff understand whether instruments remain suitable for use.

Useful information includes:

• Equipment name, model, serial number and internal identification.
• Calibration date and service provider.
• Measurement points and results.
• Reference standards and measurement traceability.
• Measurement uncertainty, where relevant.
• Applicable acceptance limits.
• Results before and after any adjustment, where available.
• Details of repairs or corrective action.
• The next review or scheduled calibration date.

Certificates should be reviewed when received. Filing a certificate without checking the results may allow an unsuitable instrument to remain in service.

What Should Businesses Do When Equipment Fails?

When an instrument fails an accuracy check or calibration, the business should assess its suitability before continuing to use it.

Appropriate actions may include:

1. Identify the Instrument: Clearly mark equipment that should not be used for affected measurements.
2. Provide a Suitable Replacement: Use another instrument with confirmed accuracy where necessary.
3. Arrange Further Assessment: Determine whether adjustment, repair or replacement is appropriate.
4. Review Previous Measurements: Consider whether the error could have affected food safety or product-quality decisions.
5. Document the Response: Record the issue, investigation and actions taken.
6. Review the Schedule: Consider whether more frequent checks or calibration are needed.

Any assessment of affected food should follow the business’s food safety procedures and involve the responsible food safety personnel.

Choosing a Reliable Calibration Service Provider

A suitable provider should understand the instruments being used and the accuracy needed for the business’s processes.

Key Factors to Consider:

• Relevant Capability: Confirm that the provider can calibrate the instrument type and measurement range.
• Suitable Calibration Points: Request points that reflect actual operating conditions.
• Measurement Traceability: Ask how results are linked to appropriate reference standards.
• Clear Documentation: Ensure certificates contain enough information to assess the results.
• Appropriate Uncertainty: Check whether the service can support the accuracy needed for the application.
• Practical Service Options: Consider laboratory or on-site calibration according to equipment suitability and production needs.

If an accredited calibration is required by a customer or certification arrangement, confirm that the requested service falls within the provider’s current accreditation scope.

Building an Effective Calibration Program

A practical program helps businesses manage equipment consistently and avoid missed checks.

1. Create an Equipment Register

List the measuring instruments used for food safety and quality control. Give each instrument a unique identifier and record its location and purpose.

2. Define Accuracy Requirements

Identify the operating range and acceptable error for each application. An instrument should be suitable for the decision its readings support.

3. Establish Calibration and Check Schedules

Set intervals using manufacturer guidance, applicable requirements, operating conditions and equipment history.

4. Train Staff

Staff should understand how to use instruments correctly, perform authorised checks, recognise unreliable readings and report faults.

5. Review Results and Trends

Monitor repeated failures and changes in instrument accuracy. Use this information to improve maintenance, handling practices and calibration schedules.

Supporting Reliable Food and Beverage Operations

An effective calibration program helps Australian food and beverage businesses make dependable measurement decisions. Accurate thermometers, scales, sensors and other instruments support food safety controls, consistent products and efficient operations.

Businesses should identify their applicable requirements, choose suitable calibration services and review equipment performance over time. Combining calibration with routine checks, staff training and organised records creates a practical foundation for reliable measurement.