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Reading received, tested and reported dates

Received, tested and reported dates describe different events. The earliest or latest date on a certificate is not automatically the date the material was manufactured, and none of these labels should be replaced with a generic date without preserving its meaning.

For research use only. Not for human or veterinary use.

For a timeline, store each supplied date in its own field and keep the original text if the date format is ambiguous. A record sorted by report date may have a different order from one sorted by test date. Explain which date the archive uses.

Reading checklist

Preserve the original date label
Resolve month/day ambiguity before conversion
State which date controls the displayed order

Reference: Certificate report identifiers.

Sources and further reading

Eon certificate archive

External references explain terminology and methods. They do not certify Eon products or establish suitability for human or veterinary use.