Designed to meet ANSI standards, the environmental/low level dosimeter is rugged enough to withstand the rigors of outdoor usage and environmental extremes, and sensitive enough to provide accurate reporting to 0.1 mrem (1 µSv). The Environmental/Low Level dosimeter is for both indoor and outdoor use in applications such as environmental monitoring, low-level exposure studies, and determining exposure to members of the public for compliance with current guidelines and the Code of Federal Regulations (10CFR20).