Fyrite® Gas Analyzers are fast, accurate and easy to use instruments for measuring and analyzing carbon dioxide or oxygen. Fyrite® Analyzers are available for either CO2 or O2 analysis. Fyrite® Indicators have a broad range; they may be exposed to ambient temperatures from -34° to 65°C (-30° to 150°F), and gases up to 450°C (850°F) may be tested with standard aspirator sampling equipment.