The 725 offers 1000ppm sensitivity to detect combustible gasses including natural gas, methane, propane (LPG), diesel, and kerosene. 

Features:

• 1000ppm sensitivity
• Trace natural gas lines and fittings for leaks
• Check gas equipment for leaks
• Test propane tanks, fittings, lines, and heaters for leaks

Contact us for complete specifications or visit http://www.testproductsintl.com