GfG Instrumentation, Inc., www.goodforgas.com, 800-959-0329.
Portable monitor by GfG Instrumentation
![Portable monitor](http://www.ishn.com/ext/resources/Issues/Jan-2015/GfG1.jpg?1420471165)
GfG Instrumentation’s G460 advanced portable atmospheric monitor offers up to six gas capabilities, including infrared for the detection of CO2 and PID for the detection of VOCs. It has a durable watertight case, operation times up to 25 hours, a sampling pump, data logging capabilities, interchangeable battery packs and a full three-year warranty on the most commonly used sensors.