What is minimum ignition temperature (MIT)?

Minimum ignition temperature is a test result for ignition of a dust cloud or layer under specified conditions; the method and whether the result is for a cloud or layer matter. Use it within a documented equipment-temperature and ignition-source evaluation rather than as a generic operating setpoint.

Cloud and layer tests answer different questions Temperature and ignition-source evaluation Sample, method, result, and uncertainty

The source links below support the regulatory, standards-development, investigation, or test-characteristic context stated on this page. DustDHA does not reproduce paywalled standard text and does not turn general source material into a facility-specific engineering conclusion. Where a fact depends on the current NFPA 660 edition, use the official NFPA publication and record the edition reviewed.

Record the material form, process conditions, equipment and enclosure, current safeguards, authority having jurisdiction, and the evidence used. Separate verified facts from assumptions. If a decision affects life safety, explosion protection, code compliance, or a signed engineering deliverable, have a qualified professional evaluate the actual site rather than relying on this summary.