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. 2016 Jul 6;6(3):154–165.

Table 1.

Radioactive purity of ¹⁸F

Nuclide	Half-life	Activity calibrated at EOB

		Irradiated water		Recovery water		Bulk FDG solution

		Bq/g	ppb	Bq/g	ppb	Bq/g	ppb
F-18	110 m	6.3×10¹⁰	-	6.5×10¹⁰	-	4.5×10¹⁰	-
Cr-51	27.7 d	5113	81	747	12	<10	<0.22
Mn-52	5.59 d	1479	24	958	15	<2	<0.03
Mn-54	312 d	80	1.3	60	1	<2	<0.03
Co-55	17.5 h	6657	106	14003	215	<0.6	<0.01
Co-56	7.73 d	1562	25	2074	32	<2	<0.04
Co-57	272 d	743	12	1119	17	<2	<0.04
Co-58	70.9 d	9428	150	12104	186	<2	<0.04
Ni-57	1.48 d	3477	55	4641	71	<2	<0.05
Tc-95	20 h	709	11	N.D.	N.D.	N.D.	N.D.
Tc-95 m	60 d	100	1.6	N.D.	N.D.	N.D.	N.D.
Tc-96, 96 m	4.28 d	317	5	N.D.	N.D.	N.D.	N.D.
Re-181	1.27 y	141	2	<47	<0.7	<1.7	<0.04
Re-182, 182 m	19.9 h	269	4	<90	<1.4	<5.0	<0.11
Re-183	2.67 d	134	2	<79	<1.2	<4.2	<0.09

N.D. - not detectable.