TABLE 1

Measured and Massic Activities for NIST-Prepared 68Ge Epoxy–Filled Mock Syringes

Source identifierTotal activity (Bq)Massic activity (Bq·g−1)
E3S1(2.28 ± 0.01) × 106(6.97 ± 0.04) × 105
E3S2(2.30 ± 0.01) × 106(6.98 ± 0.04) × 105
E3S3(2.41 ± 0.01) × 106(6.92 ± 0.04) × 105
E3S4(2.26 ± 0.01) × 106(6.80 ± 0.04) × 105
E3S5(2.02 ± 0.01) × 106(6.76 ± 0.04) × 105
ES1(6.45 ± 0.03) × 105(1.98 ± 0.01) × 105
ES2(7.03 ± 0.04) × 105(2.05 ± 0.01) × 105
ES3(6.58 ± 0.03) × 105(2.06 ± 0.01) × 105
  • Data are presented as of common reference date. All uncertainties are estimated on basis of uncertainty components presented in Table 2. Massic activity values have additional uncertainty component of magnitude 0.1% that is due to uncertainty in mass of added epoxy.