Capintec CRC-25R, Owner'S Manual, Page: 212 / 228

CAPINTEC, INC CRC
®
-25R
Multiplication factors for Zr95 Activity Measurements:
Use a Calibration Number of 271 and a multiplication factor as indicated in the following table
to obtain Zr95 activity at time “t” days after an initially pure source of Zr95 is obtained.
Zr95
t
[days]
Multiplication
Factor
t
[days]
Multiplication
Factor
0 1.000 40 0.592
2 0.961 50 0.548
4 0.925 60 0.513
6 0.893 80 0.462
8 0.863
100 0.426
10 0.836 150 0.374
15 0.776 200 0.347
20 0.727 300 0.322
25 0.685 600 0.309
30 0.650
∞
0.308
Multiplication factors for Te121m Activity Measurements:
Use a Calibration Number of 187 and a multiplication factor as indicated in the following table
to obtain Te121m activity at time “t” days after an initially pure source of Te121m is obtained.
Te121m
t
[days]
Multiplication
Factor
t
[days]
Multiplication
Factor
0 1.000 40 0.437
1 0.943 50 0.415
2 0.895 60 0.401
5 0.782 70 0.392
10 0.661 80 0.386
15 0.586 90 0.382
20 0.535 100 0.379
25 0.499 120 0.376
30 0.472 140 0.374
A3 - 4 APPENDIX III July 07