Cold-Chain Answers
Understand what monitoring data can establish—and which questions still need a person, procedure or additional evidence.
Does location tracking prove that goods remained within their required conditions?
No. Location data can show or estimate where a device or shipment was recorded and help frame a timeline. It does not measure temperature inside the goods. Use appropriate sensor data and the applicable product-specific requirements for a condition assessment.
What should I check when a temperature record has a gap?
Preserve the original file. Check device memory, battery, logger status, data export, transmission and gateway logs, timestamp and time-zone settings, and handover records. Describe the period that is missing and the checks completed. Do not treat a gap alone as proof of an excursion or proof that conditions were acceptable.
Can one logger represent every item in a load?
Not automatically. Sensor position and local airflow, packaging, load pattern and shipment configuration affect what it measures. Use a documented monitoring approach appropriate to the goods and route; explain the logger's position and the basis for any claim that it represents a wider load.
Is there a universal cold-chain temperature limit?
No. Requirements vary by product, route, packaging and applicable quality instructions. Use the current product specification and approved procedures. The example material on this site does not set limits.
Does an alert prove that a product is damaged?
No. An alert shows that a configured system rule was triggered by an input or status condition. Verify the rule, device, record and shipment association, then follow the responsible quality process to assess any potential impact.
What details should accompany a sensor reading?
At minimum, identify the device and shipment, measurement time and time basis, device placement, logging interval, calibration context and source file. Note transformations, gaps and any relevant activation or retrieval event.
Can a sensor transmit data late and still be useful?
Yes, stored data may arrive later and still support review, but transmission time and measurement time must be distinguished. Check local device storage, message-received timestamps and clock synchronization to understand the delay.
What should a handover record show?
Record the shipment identity, time and location, custody change, visible packaging or seal exceptions, logger presence or status where checked, and actions taken. A handover scan supports a custody timeline; it does not independently establish environmental conditions.
Which standards or guidance can help?
Potential references include the European Commission's GDP guidelines (2013/C 343/01), EN 12830 on temperature recorders, ISO 23412 for temperature-controlled refrigerated delivery services, and GS1 EPCIS 2.0 for traceability event data. Check current editions, scope and applicability before relying on a reference.
Who decides whether goods can be released?
The authorized role under the organization's quality and product procedures makes that decision. A logger, tracking platform or general information page does not determine product disposition.
Continue through the evidence chain
Read the sensor · Locate the load · Interpret the alert · Review the record