Capintec CRC-25R - MULTIPLICATION FACTORS FOR PB212 ACTIVITY MEASUREMENTS

CAPINTEC, INC CRC
®
-25R
Multiplication factors for Pb212 Activity Measurements:
Use a Calibration Number of 101 and a multiplication factor as indicated in the following table
to obtain Pb212 activity at time “t” hours after an initially pure source of Pb212 is obtained.
Pb212
t
[hours]
Multiplication
Factor
t
[hours]
Multiplication
Factor
0 1.000 5 0.772
0.5 0.924 6 0.768
1.0 0.875 7 0.766
2.0 0.820 8 0.765
3.0 0.793 9 0.765
4.0 0.779 10 0.764
Equilibrium
A3 - 8 APPENDIX III July 07