The Ludlum Model 19 MicroR survey meter is used for low level micro R gamma survey. It is a compact, rugged, internal scintillation detector survey meter. The Model 19 Micro R survey meter includes an internal 1"x1" NaI detector, five ranges and splash proof shields for outdoor use. No external detector is required. Sensitivity, based on Cs-137 gamma, is typically 175 cpm/microR/hr. This meter over-responds to scatter and low energy gamma which makes it more sensitive than any survey meter available.
