Calculator for caesium-137 measurement

This form can be used to calculate caesium-137 inventory in mBq / cm^2 or radioactivity per unit mass in mBq / g if cumulative counts, counting time (in seconds), total sample weight (in gram), detected sample weight (in gram), area of sampling tube (in cm^2), and detect efficiency are properly given. Cautions are drawn to the units being used.
counting area counting time area of sampling tube
total weight detected weight detect efficiency

The caesium-137 activity is:
in mBq / cm^2 or in mBq / g