Fyrite® Indicators have a broad range; they may be
exposed to ambient temperatures from -30° to 150°F, and
gases up to 850°F may be tested with standard aspirator
sampling equipment (special sampling equipment for
higher gas temperatures or dry gases is available). See
Fyrite® Instruction manual 11-9026. For temperatures above 1400°F, a ceramic sampling tube (Bacharach Part No. 11-0164) is available.