Fig. 4

Control study to evaluate whether interference properties are caused by the conductivity of the solution or the unique characteristics of the interference agent. NDV sample with 100 mM citrate enables better clearance than NDV sample with the same conductivity (adjusted by sodium chloride). No protein was detected in the elution for 100 mM citrate, therefore the calculation for log reduction value results in an infinite number (depicted by upward arrow). (n = 2 for control with no adjustment, n = 3 for conductivity control and 100 mM citrate, mean values ± SD are shown)