Competence of the participants. Each of the participants estimated its intra-lab uncertainties, as a basis for his intra-laboratory validation of these SOPs. Error! Reference source not found. gives an overview of the datasets ollected for the ILC by the different partners of D2.10, indicating the number of days and repetitions per day (days x repetitions/day). Most labs followed the 5 days and 3 repetitions per day scheme to validate their results. One laboratory only measured for 2 days and 2 repetitions per day which may result in an underestimation of the intra-laboratory uncertainty. Intra-laboratory measurement uncertainties were calculated as described in 4.1.3.1. Table 13 shows that for all labs the measured mean value of ECD is not significantly different from the certified value of 19.4 nm since the difference ∆m between the certified and the measured value is larger than the expanded combined uncertainty of result and certified value UΔ [120]. Table 13 Validation results of ERM-FD100 with the mean modal ECD, U(X), the expanded intra-laboratory uncertainty (95%) and Δm, the absolute difference with the certified EM value of 19.4 nm and Expanded combined uncertainty of result and certified value UΔ. Lab Mode U(x)a b Δm UΔ A 19.1 nm 5.1 % 0.3 nm 1.6 nm B 18.1 nm 10.4 % 1.3 nm 2.3 nm C 18.1 nm 3.4 % 1.3 nm 1.4 nm D 18.2 nm 10.8 % 1.2 nm 2.4 nm D* 18.4 nm 5.9 % 1 nm 1.7 nm E 16.5 nm 26.4 % 2.9 nm 4.5 nm F 19.8 nm 12.0 % 0.4 nm 2.7 nm G 19.7 nm 12.2 % 0.3 nm 2.7 nm H 18.6 nm 5.0 % 0.8 nm 1.6 nm a Repeatability, intermediate precision and calibration uncertainties. b 95% expanded combined uncertainty of result and certified value (uCRM = 0.65 nm)
