Le "Relevant Melee Sampling" appliqué au diamant mêlé
Melee diamond batches are graded (clarity, colour, symmetry, proportions, etc.) on the basis of rigorous sampling. GGTL Laboratories offers RMS (Relevant Melee Sampling), a method for calculating the optimal sample size based on the Cochran formula (1977) with a finite population correction factor. This mathematically grounded approach controls the variability of the sampling process far more effectively than AQL tables, whose use outside a defined procedure generates unacceptable error margins in the context of melee grading.
Ressources
References
- Cochran, W.G. (1977). Sampling Techniques (3rd ed.). John Wiley & Sons.
- David, F.G. (2014). Business Statistics: A Decision-Making Approach. Pearson.
- Evans, J.R. & Lindsay, W.M. (2002). The Management and Control of Quality (5th ed., pp. 115–128). South-Western, Cincinnati.
- Montgomery, D.C. (2009). Introduction to Statistical Quality Control (6th ed.). John Wiley & Sons.
- Pires, A.P. (1997). Échantillonnage et recherche qualitative : essai théorique et méthodologique. In La recherche qualitative. Enjeux épistémologiques et méthodologiques (pp. 113–169).
- Norme ISO 2859-1 (1999). Règles d'échantillonnage pour les contrôles par attributs.