pH and buffer capacity: why the same reading can behave differently
Two formulas can share pH 5.2 and respond differently to an addition. Understand buffer capacity, measurement conditions, and the limits of a pH result.
3 min read
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The latest from our journals, news desk, and regulatory coverage. Explore the science behind the everyday.
Bemotrizinol in US sunscreens: formats, supply and testing
FDA’s decision adds a filter option under specific conditions. Check format, supply, product testing, and packaging before planning a US launch.
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Who did what, and when? Reading a laboratory record
A measurement at 09:10, an entry at 09:25, and a review at 10:00 are different events. A laboratory record should make each understandable.
3 min read
Which formula did we make? Keeping versions identifiable
A pilot ticket says version 3, but its quantities match version 4. Here is how clear formula history helps resolve that mismatch.
3 min read
What to put in a laboratory cleaning log
A cleaning log should explain the work and any problem left to resolve. Follow a vessel with residue through the record and its follow-up.
2 min read
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
What an equipment maintenance history should explain
When a mixer fault returns, two entries saying “serviced” are not enough. Keep the findings, repairs, checks, and equipment use together.
2 min read
Tracing a cosmetic batch from ingredients to finished stock
Follow two ingredient lots into one bulk batch and two filling runs to see where traceability records commonly lose the connection.
3 min read
The EU PFHxA cosmetics restriction: limits and earlier stock
The PFHxA cosmetics restriction applies from 10 October 2026. Check the chemical scope, reporting limits, and evidence for any earlier stock.
3 min read