Perform accurate and timely analysis of gold refining samples using techniques like fire assay, ICP-OES, and titration to ensure product quality.Maintain and calibrate laboratory equipment, including spectrometers, balances, and furnaces, ensuring they are in optimal working condition.Prepare and standardize chemical solutions and reagents, meticulously following established protocols and safety guidelines.Conduct routine quality control checks on all analytical procedures, documenting results and identifying any deviations.