Fire testing according to ISO 5660-1


The Cone Calorimeter test, strictly speaking, measures performance based on the interplay of material attributes, specimen, and the prescribed design fire scenario.

The results can be used to assess material-specific features, distinguishing them from other well-known fire reaction tests. Although not formally adopted by any classification standards, cone calorimeter tests can be a universal method for ranking and comparing materials’ fire behaviour.

Fire modelling, predictions of real-scale fire behaviour, and fire scenarios can also be defined and facilitate the drive towards performance-based design.

Pass or failure criterion-based tests investigated by the Cone Calorimeter may also facilitate the development process of new materials and products.

The method is cost-effective in product development and production control.

Fire testing according to
ISO 5660-1

ISO 5660-1 Reaction-to-fire tests – Heat release, smoke production and mass loss rate.
Part 1: Heat release rate (Cone calorimeter method) and smoke production rate (dynamic measurement).


A specimen with the dimension 100 mm x 100 mm is placed into the load cell in a metal sample holder. The majority of tests are performed with a horizontal orientation. The sample is then exposed to controlled irradiance levels by the truncated cone-shaped heater.

Once enough pyrolysis gases are generated, ignition occurs through a spark igniter and the sample consequently burns. The sample will flame and start to burn if the conditions and the material properties permit burning.

After passing through the heating cone, an exhaust duct system collects the combustion gases with an exhausting cowl and a centrifugal fan.

The heat release is measured using the data on measured oxygen concentration in the emitted smoke.

The Cone Calorimeter is one of the more sophisticated systems and can measure several flammability characteristics simultaneously. The rate of heat released is the most valuable measurement (kW/m2);

These include, the time to ignition in seconds, the mass-loss rate (kg/s) during combustion, the time to and value of the maximum/total amount of heat released (MJ/m2) during combustion, the critical heat flux (kW), effective heat of combustion (MJ/kg), smoke production rate (m2/s), and release rates and concentrations of combustion gasses such as CO and CO2.


Complete test
R6000.00 excl. VAT

Indicative test
R3000.00 excl. VAT


Maximum 30 minutes per sample


Fire safety, building construction, risk and safety and research entities


Material needed for testing

Complete test
6 specimens with dimensions 100 mm x 100 mm x nominal thickness (max 50 mm).

Indicative test
2 specimens with dimensions 100 mm x 100 mm x nominal thickness (max 50 mm).



Laboratory Location

20 Chardonnay Road, Saxenburg, Blackheath, Kuilsrivier, 7580

Office Hours

Mon – Fri: 8am – 5pm


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(021) 905 0322
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