For those needing portability, Rad Pro for Desktop works with Windows 8.1/10 tablets. Will not work with Surface tablets running Windows RT.
Select Activity Units
dpm
Bq
pCi
uCi
cpm
Enter Background
min
Enter Background Count Time
cpm
Critical Level (Lc)
Select Sample Units
100cm2
cm2
g
kg
cc
L
Select Correction Factor
Select Confidence Level
None
Surface Correction
Chemical Yield
Filter Efficiency
90%
95%
97.5%
99%
Counter and Scaler MDC/MDA Calculations
min
Select Instrument
Scaler
Frisker
dpm/100cm2
Minimum Detectable Contamination (MDC)
Counts
Lower Limit of Detection (LLD)
cpm
Lower Limit of Detection (LLD)
cm2
Enter Sample Area
cpm/dpm
Enter Efficiency
Enter Sample Count Time
Classic MDA calculations for counters and static scanning instruments in the scaler mode. US regulatory guide MARSSIM has recommended replacing the term MDA with MDC for minimum detectable concentration and minimum detectable contamination. The choices above are varied enough so that MDC may be calculated for air samples, removable contamination, solids, liquids and total contamination. Most modern texts have replaced the Lloyd Currie k^2 in the LLD (lower limit of detection) with the Lewis Brodsky 3.0 for a 95% confidence level factor so we have done the same. All other confidence levels still use k^2. LLD is expressed both in counts and cpm. Lc, the crtical level is expressed in cpm. The MDC output depends on the user choices.