Designed to replace all range of gas tubes, it is a revolutionary handheld PID instrument for rapid, accurate detection of volatile organic compounds (VOCs) with exceptional resistance to humidity and contamination. Fastest response time of just 2 seconds and is as quick to clear down. It is simple and, enables one handed operation. Its rugged design and protective, removable rubber boot withstand the harshest environments. Inexpensive consumables and parts, and 5 years warranty when instrument is registered online.