Lithium Argentina AG

Table 40: Statistical Analysis of Duplicate Samples – SGS

The assay results for duplicate samples at SGS demonstrate a high degree of precision and consistency for key parameters of lithium and potassium. The Relative Percent Difference (RPD) is low, with values of only 1.3% for lithium and 1.1% for potassium. These are significantly lower than the commonly accepted 10% cut-off and suggest that the laboratory’s analytical procedures are consistently producing results that are in close agreement with each other.

Figure 84 display max-min plots for each laboratory, showing the maximum versus minimum values for each pair of samples and the failure line is represented by a hyperbolic function (𝑌 2 = 𝑚 2 𝑋 2 + 𝑏 2), where m is the slope of the asymptote and b the intersection at the y axis. The failure line was calculated based on a 10% relative error allowance.

There were no failures for either lithium nor potassium within duplicates analyzed by SGS. The generally accepted threshold for failure rates is 10%, so duplicates are not only considered acceptable, but the lack of failures suggests high precision within the SGS laboratory for the current project.