Fry Oil Testers
Miroil Fry Oil Test Kits provide commercial kitchens with a reliable, measurable way to monitor frying oil quality and determine when oil should be replaced. Rather than relying on visual inspection alone, these solutions support consistent oil management and quality assurance programs. Shop online for Miroil 3-Minute Quality Assurance PCM Test Kits as well as professional electronic testing options such as the Testo 270 Cooking Oil Tester. Each option is designed for practical use in fast-paced foodservice environments.
What Is the Difference Between PCM and ACM Fry Oil Testing?
Fry oil degradation can be evaluated using different chemical indicators, most commonly Polar Contaminant Material (PCM) and Alkaline Contaminant Materials (ACM). While both relate to oil breakdown, they measure different stages and characteristics of deterioration.
PCM testing measures the accumulation of polar compounds that form as oil oxidizes and degrades through normal frying exposure to heat, oxygen, moisture, and food particles. As these compounds increase, overall oil quality declines. When PCM reaches a critical threshold, the oil has reached the end of its usable life. For this reason, PCM testing is widely used as a clear discard indicator and supports structured oil replacement programs and quality assurance documentation.
ACM testing measures reactive alkaline breakdown substances that develop during oil use. These compounds can influence foaming and oil behavior during active frying. While ACM provides insight into certain chemical changes occurring in the oil, it does not serve as a direct end-of-life indicator in the same way PCM testing does.
For commercial kitchens focused on establishing consistent and measurable oil replacement standards, PCM testing provides a practical and objective method for managing oil life, improving product consistency, and supporting operational control.
More Information and Resources
Read more about the difference between PCM and ACM testing
View MirOil Quality Assurance PCM & ACM Test Kit Labels
View the Independent Research Study on Frying Oil Degradation:
Trial of New Oil Treatment for Deep Fryers (Booth, Wingett & Koch, 1994)
