Authorized by the T.C. Ministry of Treasury and Finance General Directorate of Mint and Stamp Printing House with the Assay Office Gold and Silver Authorization Certificate, our laboratory is entitled to prepare expert reports for import and export transactions. Within the GRAMALTIN Precious Metals Refinery Laboratory, analysis processes are carried out using Fire Assay (ISO 11426 Cupellation method for Gold Assay) and Potentiometric analysis methods (Silver Assay). The GRAMALTIN Precious Metals Refinery Laboratory conducts studies to reduce environmental pollution, properly discharge waste, and use energy efficiently.