The Model 44-215 beta scintillation detector, based on the familiar Model 44-1, features a larger window area attached to an ergonomically angled and more comfortably sized handle. The Model 44-215 design thereby provides additional benefit for the operator as well as achieving improved results. This detector may be used with any Ludlum instruments or equivalent instruments with a voltage range of 500 to 1200 V and input sensitivity of 2 to 50 mV.