How fast a material releases heat decides how fast a fire grows, which is why calorimetry anchors most modern fire regulation. The cone calorimeter measures heat release by oxygen consumption at bench scale; the same principle scales up to the UL 9540A hood for battery units and across to the OSU chamber for aircraft materials. Where specimens are scarce, milligram-scale MCC and mass-loss calorimetry cover screening. The bomb calorimeter completes the family by measuring total stored chemical energy rather than its rate of release.
Cone Calorimeter
The reference heat release instrument.
Mass Loss Calorimeter
Heat release from mass loss.
Microscale Combustion Calorimeter
Milligram-scale screening.
OSU Heat Release Apparatus
Aircraft cabin materials.
UL 9540A Calorimetry
Thermal runaway heat release.
Bomb Calorimeter
Gross heat of combustion.
Choosing a calorimeter
Start from the report you must issue. Classification to EN 13501-1 or product development data: cone calorimeter. Aircraft qualification: OSU. Energy storage: UL 9540A calorimetry. Formulation screening: MCC or mass loss. PCS values for A1/A2 classification: bomb calorimeter. The heat release rate guide explains the quantities these instruments report.