How Scale Calibration Supports HACCP in Seafood Processing

By. Wildan - 11 Sep 2026

kelolalaut.com In seafood processing, accurate weighing is an important part of maintaining product quality, food safety, and production control. Weighing scales are used throughout the production process, including receiving raw materials, portioning fish, mixing ingredients, packaging products, and checking final product weight.

For a seafood factory implementing Hazard Analysis and Critical Control Points (HACCP), reliable weighing equipment is essential. An inaccurate scale can cause incorrect measurements, affect product specifications, and create problems with process control and documentation.

Understanding HACCP and Measurement Control

HACCP is a preventive food safety system designed to identify, evaluate, and control hazards that may affect food safety. The system requires seafood processors to establish appropriate control measures, monitor processes, maintain records, and verify that controls are working effectively.

Although scale calibration is not automatically a HACCP critical control point, weighing equipment can support monitoring and verification activities within a HACCP-based food safety system. Therefore, scales used for important measurements need to provide dependable results.

If a scale produces incorrect readings, decisions based on those readings may also become inaccurate.

Preventing Incorrect Product Formulation

Many seafood products require precise quantities of ingredients or additives. Incorrect weighing can affect the formulation and consistency of a product.

For example, when ingredients are added according to a specific formulation, an inaccurate scale may cause excessive or insufficient quantities to be used. This can affect product quality and, depending on the ingredient and process, potentially affect food safety.

Regular calibration helps ensure that the measurements used during production remain within established accuracy requirements.

Supporting Portion and Packaging Control

Scales are also widely used to control portion sizes and packaged product weights. Consistent weighing helps ensure that products meet internal specifications and applicable labeling requirements.

If a scale reads higher or lower than the actual weight, the factory may unintentionally produce underweight or overweight packages. Underweight products can create customer complaints and compliance concerns, while excessive product weight can increase material costs.

Properly calibrated scales help production teams maintain more consistent portion control and reduce unnecessary product giveaway.

Calibration Procedures

Calibration should be performed according to a documented procedure and an established schedule based on equipment use, risk, manufacturer recommendations, and company requirements.

The process normally involves comparing the scale's displayed measurement with a known reference standard. Appropriate certified or traceable weights should be used according to the scale's capacity and accuracy requirements.

If a scale does not meet the required tolerance, it should be adjusted, repaired, or removed from service until its accuracy has been restored.

Recording and Traceability

Documentation is an important part of both calibration management and HACCP verification. Calibration records should include relevant information such as the equipment identification, calibration date, reference standards used, results, acceptance criteria, and responsible personnel.

These records provide evidence that weighing equipment has been properly controlled. They can also help the quality assurance team identify trends and investigate potential problems.

Good documentation improves traceability and makes it easier to determine whether previous production results may have been affected by an inaccurate scale.

Training Employees

Employees who operate weighing equipment should understand how to use scales correctly. They should know how to place products properly, avoid overloading the equipment, keep weighing surfaces clean, and recognize abnormal readings.

Operators should also understand the importance of reporting damaged equipment or unusual measurement results immediately. A calibration program will be less effective if employees continue using equipment that has already shown signs of malfunction.

Supporting Continuous Improvement

Calibration should be viewed as part of a broader equipment-control program rather than a one-time activity. Seafood factories can review calibration results regularly to identify recurring problems and determine whether calibration intervals need adjustment.