Extech TM26 Waterproof Food Thermometer with NSF Certificate is ideal for measuring liquids, pastes, and semi-solids in the food industry, agriculture, laboratories, and more. The Extech TM26 is NSF certified for measuring food, features a 4.1” stainless steel penetration probe, and measures from -40°F to 392°F (-40°C to 200°C).