Which statement best describes the purpose of periodic peroxide tests as a mitigation practice?

• A. Only one-time testing at purchase.
• B. Relying on color changes.
• C. Periodic peroxide tests.
• D. Never testing.

Answer: (C)

Peroxide formation in many solvents happens progressively over time, so checking at intervals is essential to catch any buildup before it becomes dangerous. Periodic peroxide tests provide a quantitative measure of how much oxidizer has formed, allowing you to decide when a material should be discarded, stabilized, or repackaged for safe use. This proactive monitoring is necessary because peroxide levels can rise with age and storage conditions, and you can’t rely on a one-time test at purchase to guarantee long-term safety. Color changes aren’t a reliable indicator either—some peroxides are colorless or show only subtle cues, and the hazard depends on the actual concentration, not appearance. Never testing misses dangerous buildup entirely and is not acceptable for safe operation.