Fig. 10.

Comparison of massic activities C_A (in Bq · g⁻¹) of ⁶³Ni obtained from experiments with three different ampoules, 7, 58, and 30, chosen at random from the 60 ampoules of SRM 4226C prepared. The squares indicate measurements performed using relatively low (< 3 %) aqueous fraction in the LS cocktail, while the circles indicate higher (≈ 10 %) aqueous fractions. The uncertainty bars signify the one standard uncertainty interval for measurement reproducibility amongst all cocktails with similar LS cocktail composition prepared with ⁶³Ni from the same ampoule.