PEMBUATAN IN-HOUSE STANDARD BAHAN ACUAN BAKU (STANDARD REFERENCE MATERIAL) LATERIT NIKEL

The internal analysis result from theCentre forGeological Resources Laboratory (8 times iteration) shown that generally the results was precise compare to other laboratory (<10%>) except for several elements such as CaO ( P-1: 11.28%, P-2: 33.5% and SG -1: 27.82%), SiO (P-2: 10.27%) and Mg (SG-1: 23.6%). The analysis results of Ni, Co, Mg, Fe, Cr, SiO2, Al203, and CaO that derived from 9 (nine) different laboratory displayed variation results due to different analysismethods using by each laboratory. 2