Luxfer Magtech - M256A1 Chemical Agent Detector Kit

The M256A1 Kit can detect and identify field concentrations of nerve, blister (including Mustard and Lewisite), and blood agents in both vapor and liquid form in about 15-20 minutes. Used after a chemical attack, the M256A1 Kit can determine the type of agent present, or can confirm the absence of a hazardous concentration of an agent — making it easier to determine if it's safe to unmask or reduce the protective posture level.

In 2012, the State of California's FIRESCOPE Standardized Equipment List, listed the M256A1 as a required item for emergency and Hazmat first responders.