Choosing the best infrared emitter depends on several factors, including the absorption characteristics of the target material, the required heating temperature, and the response time needed for the process.

If the absorption properties of the target material are known, the peak emission wavelength can be used to select the most suitable infrared emitter.

If those characteristics aren’t known, small scale testing with 1 or 2 emitters may be enough to provide a better understanding of what works with the material in question. 

Another key factor is the thermal response time required by the process. Ceramic emitters typically require about 10-12 minutes to reach steady-state temperature. Quartz cassette emitters require about half this time, with tungsten/halogen emitters close to full output within a few seconds.