The testo 310 residential combustion analyzer represents a new class of instruments for Testo and provides exceptional value and expanded capabilities in combustion testing. The 310 sets a new standard in reliable combustion tuning with its rugged housing, simple design and advanced sensor technology. The easy-to-read backlit display shows more measurements which provides a more complete picture of the combustion process. Simple top-of-display icons show you the current measurement functions. After only 30 seconds the 310 is ready to test. 

Fully featured - for better testing and tuning

• O2, CO (w/ NOx filters standard), CO2
• Draft & Pressure
• Temperature (flue & ambient)
• Combustion efficiency & excess air
• Undiluted CO (CO air free)
• Ambient CO