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. Author manuscript; available in PMC: 2019 Apr 11.
Published in final edited form as: J Radioanal Nucl Chem. 2018;318:10.1007/s10967-018-6032-9. doi: 10.1007/s10967-018-6032-9

Fig. 2.

Fig. 2

Schematic of material and analytical linkages between the M solution, SRM 4328C, and the 229Th RM. Bold arrows indicate the activity measurement linkages. The lighter arrow indicates direct production of the 229Th RM from the M solution. Activity values shown in the figure are for the December 31, 2007 reference date of the massic activity value of the M solution. All uncertainties are combined standard uncertainties