How to use logger data in shelf-life decisions

Link the time series to a calibrated device and product model; a chart alone does not set days remaining or release status.

24 November 2024Updated 23 September 2026

Short answer

First verify logger ID, calibration, location, sampling interval and data gaps. Link the trace only to a model validated for the same product or formulation, packaging and storage conditions; if none applies, do not calculate days remaining. Give the chart to the quality owner for deviation and lot review. Disposition must follow the current label and authorised decision.

A logger trace is a measurement history; it does not by itself calculate remaining shelf life or product suitability for sale.

Before using the file, check instrument ID, calibration, sensor location, sampling interval, clock setting and missing-data periods. Preserve the raw file with shipment and lot identity.

If a product-specific shelf-life model exists, verify its scope: formulation, process, packaging, target conditions and deviation scenario must be represented in the study. If assumptions cannot be matched to the shipment, do not produce a mathematical days-remaining result.

If analysis under an applicable model is performed, record method, version, input data and analyst. The result is an input to review; excursions from product requirements and incomplete records need separate assessment.

The quality owner reviews current label, validated study, logger file and lot history together and documents the decision. A sensor result alone does not release or condemn a lot.

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Topics:Measurement and traceability Food quality and shelf life

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