Capintec CRC-25R - TABLE I

CAPINTEC, INC CRC
®
-25R
TABLE I
CAUTION: The calibration numbers given in this table are based upon the NIST SRM geometry (5ml
of solution in glass ampoule with 0.6mm wall thickness). Listed numbers should provide an accuracy
of ±5% when compared to a NIST SRM. Different source geometries (e.g. capsules, seeds, ribbons)
may require geometry correction factors or different calibration numbers. However, no warranty of any
kind can be made as to their accuracy, since there are many other uncontrollable factors (as well as
the accuracy of the published data) involved in the determination of the overall accuracy of an assay.
Reference previous sections of this manual for a discussion of some of the conditions under which the
calibration numbers are valid.
Uncertainty Due to
Radioisotopes
Calibration
Setting
Number
Syringe
Corr. %
Published
Data %
Half-Life
(NCRP-58)
Ref. Comments
7
Be Beryllium 179 x 10 53.284 D 4 NM75
11
C Carbon 457 20.38 M 2 ORNL76
13
N Nitrogen 457 9.965 M 4 ORNL76
15
O Oxygen 462 122.24 S 14 ORNL76
18
F Fluorine 472 109.71 M 2 NIST 08
22
Na Sodium 957 1.7 2.602 Y 1 NBS73 Ref. for 0.51, 1.27
MeV
24
Na Sodium
658 ÷ 2
14.959 H 4 ORNL76
26
Al Aluminum
481 ÷ 2
7.2E5 Y 3 ORNL76
27
Mg Magnesium 331 9.458 M 12 ORNL76
28
Mg Magnesium 719 3 4 20.91 H 3 ORNL76 Pure; NOTE: NM75
yields a Cal. No. of
804
28
Al Aluminum 583 2.244 M 3 ORNL76 Pure
28
Mg Magnesium
(Eqb.
28
Al)
656 ÷ 2
3 4 20.91 H 3 ORNL76 Reading gives
28
Mg
Act. in eqb. sample.
Teqb after 15 minutes.
28
Al Aluminum
(Eqb.
28
Mg)
656 ÷ 2
2.244 M 3 ORNL76 Reading gives
28
Al Act.
in eqb. sample. Teqb.
after 15 minutes
28
Mg
28
Al
Magnesium
Eqb.
Aluminum
656 3 ORNL76
Reading gives sum of
28
Mg &
28
Al activity in
equilibrium sample.
32
P Phosphorus
750 × 100
1.2 14.29 D 2 NBS76 Estimation use only.
38
Cl Chlorine 470 2 36.51 M 4 NDT70
40
K Potassium
520 × 10
1.28E9 Y 1 NM75
41
Ar Argon 468 1.827 H 7 ORNL76
42
K Potassium
033 or
152 × 2
3 12.36 H 1 ORNL76
43
K Potassium 430 2 22.3 H 1 ORNL76
44
Sc Scandium 938 3.927 H 8 ORNL76
June 09 APPENDIX II A2 - 7