Radiation Detector: 
Large area scintillator (ZnS:Ag) with PMT
Sensitive Area: 171 cm²
Entrance Window: 6 µg aluminized plastic (0.4 mg/cm²)
Grid transmission: 80%

Measuring Mode:   
simultaneous and separate alpha/beta measurement

Efficiencies:
C-14 (Beta channel): 11 %
Cl-36 (Beta channel): 56 %
Tc-99m (Beta channel): 9,5 %
Am-241 (Alpha channel): 21%

Background (Alpha channel):
approx. 0.1 cps
Background (Beta channel):
approx. 10 cps
Measuring Range:
0 to 5000 cps (Alpha channel)
0 to 50000 cps (Beta channel)

Spill over:
Alpha- in Beta channel (Po-210): < 20%
Beta- in Alpha channel (Sr-90): < 2E-5

Position dependent response to a point source:
max. ± 20% (Alpha channel)
max. ± 20% (Beta channel)

General specifications:
Temperature range: -20°C to +40°C
Humidity: 0% to 95% (without condensation)
Protection: IP 53
Maximum operation with rechargeable batteries
(without illumination): > 25 h
Maximum operation with batteries
(without illumination): > 65 h

Weight: 1300 g with batteris

Selectable calibration factors: more than 50 nuclides

Data memory: more than 1000 measured values
Data output: serial port RS232