Discover the New Testo 310 (2nd Gen) Flue Gas Analyser for Efficient Combustion Diagnostics This Winter we're giving you a FREE Testo branded Water Pump Pliers Set with every Testo 310 Flue Gas Analyser or kit. The Testo 310 (2nd Gen) flue gas analyser is designed for accurate and dependable measurement of combustion values in gas or oil-fired boilers. User-Friendly Interface with Color Display Featuring a straightforward color screen user interface, the Testo 310 (2nd Gen) allows for easy navigation through four integrated measurement menus: exhaust gas, draft, Ambient CO, and pressure. All measurement results are displayed clearly and can be customised using the high-resolution graphic display.