Table 4. Plutonium Activity of Single Electroplated Source Determined by eight Laboratories Activity Reported dis/min/g Mean CV (4%) 2425, % Dev* 239-240), ”% Dev* 2385 % Dev* 8.35 8.83 8.45 8.63 8.24 9.38 7.97 8.57 2.3 3.3 1.2 94 3.6 9.7 6.8 -40 4.34 4.64 4.57 3.93 5.00 3.65 3.92 4.24 1.4 8.1 6.8 8.2 17. 15, 8.4 -90 73 .83 72 68 .69 64 72 73 1.4 15. 0. 5.6 4.2 ll. 0. 1.4 8.55 4.9 4.28 10. 72 7. *Percent deviation from mean CV = Coefficient of variation 30