What to check before using a laboratory instrument
A current service label does not answer today’s readiness question. Check the method, reference materials, readings, and response to a failure.
3 min read
Quality Control
Lab inspection findings: from observation to closure
A finding marked “done” may leave the original problem unresolved. Follow one bottle-status issue from inspection to review.
2 min read
How to review a cosmetic challenge-test report
A favourable conclusion is the start of the review. Check what was tested, how the method performed, and whether the formula has changed.
3 min read
How to plan and record a cosmetic stability study
Plan the samples and measurements before storage begins, then follow changes in the formula and its packaging through to the report.
3 min read
A supplier changed an ingredient specification. What happens next?
A revised limit, test method, and material composition are different changes. Establish which occurred before accepting the next delivery.
3 min read