Non-corrosive, non-toxic, and biodegradable. Does not attack metal or interfere with brazing or soldering. Spray-on application allows easy access for hard to reach places. Tacking agent holds solution on test surface making Bubble-N-Trouble™ very economical. USDA Authorized. This product is made in USA.

The NGD269 is ideal for checking automotive exhaust and fuel systems, liquid- and gas-fired heating systems, propane tanks and filling stations, cracked heat exchangers and manholes/sewers. Detects the presence of most combustible gases without measuring or displaying their concentration. The unit's analog bar graph, and the speed and tone of its audible alarm, enable the NGD269 to pinpoint the location of a gas leak by comparing its responses to gas exposure at different points. Measures and displays the concentration of CH4 (methane/natural gas), C3H8 (propane) and H2 (hydrogen) for ...