Factory Calibration: Calibration performed by the manufacturer during the manufacturing process of the instrument, whose purpose is to ensure that the instrument complies with the specifications and tolerances established by the manufacturer.

Documentation:

A calibration certificate is provided detailing the results and conditions under which the calibration was performed. The certificate is limited to the deviation of the instrument to be calibrated from the standard.

Benefits:

It is more economical and faster.
Suitable for non-critical uses where traceability is not a requirement.

Limitations:

Does not always meet international standards.
May not be sufficient for specific audits or regulations.

ISO 17025 Traceable Calibration: Calibration performed by an accredited laboratory that meets the requirements of ISO/IEC 17025. Its purpose is to ensure that the instrument meets the specifications and tolerances established by the manufacturer.

Documentation:

A traceable calibration certificate is issued that includes measurement uncertainty, methods used, and traceability to recognized standards.

Benefits:

Internationally recognized for its rigor and accuracy.
Essential to meet stringent quality standards and regulations.
Required for most audits and certifications.

Limitations:

May be more costly and time consuming.
May require more frequent periodic calibration.

To determine the type of calibration needed, first evaluate the need based on three key aspects: Instrument use, regulatory requirements and audits. If the instrument is used in critical processes where accuracy is critical, such as in high-precision component production or research laboratories, and is subject to strict regulations that require traceability, then calibration to ISO 17025 is the best choice. This is especially important if your company must present evidence of calibration during external audits, as it ensures that measurements are accurate and verifiable.

On the other hand, if the instrument is used in non-critical applications, such as routine maintenance tasks or in educational environments, and is not subject to strict regulations or demanding audits, factory calibration may be sufficient. This option is more cost-effective and offers the accuracy needed for less critical uses, avoiding unnecessary expense without compromising the basic functionality of the instrument.

In short, if your instruments are crucial for accuracy, are regulated by strict regulations, or are subject to audits, you need traceable calibration to ISO 17025. If these conditions do not apply and the use of the instrument is not critical, factory calibration will suffice.