While we sell just about every bit of safety equipment under the sun nothing is more popular at PK Safety than our gas monitors. We've been selling gas monitors since they were the size of a shoe box (some of them still are). Over the past few years one monitor - the GasAlert Micro Clip XL - has emerged over the years as the clear favorite for personal 4-gas monitoring. The XL is actually the latest version of the Micro Clip XT. BW continues to improve the functions and battery life of Micro Clip and the XL is the latest advancement of this tiny powerhouse. On a single charge, the XL can be used up to 18 hours straight. A full charge can be completed in less than 6 hours. The Micro Clip XL is a personal diffusion gas monitor designed to be worn on the clothing of persons entering a hazardous confined space environment. Weighing in at a mere 6.7 lbs. it's light enough that workers forget it's there until an alarm sounds. Actually, that's not entirely true, the IntelliFlash which is an occasional flash of the LED alarm (without the audio of course) verifies operation and compliance to both the user and the supervisor. The MicroClip XL is also and excellent choice for cold weather performance. And the tamper-proof, one button operation makes it simple to operate in the field and reliable for those tasked with compiling the data. Obviously it checks for the standard 4-gases - O2, H2S, CO, and LEL of combustibles. But unlike some monitors, the MicroClip XL provides constant readout of the gas concentrations. Calibration procedures are simple. Full function self-test of sensor, battery status, circuit integrity and audible/visual alarms on start up and the units are compatible with the BW MicroDock II automatic test and calibration stations. If you have questions about the MicroClip XL or you want to buy in bulk, please give our folks a call at 800-829-9580.