Used in analytical laboratories for calibration of instruments such as atomic absorption spectrometers and inductively coupled plasma (ICP) systems to accurately measure nickel concentrations in various samples. Commonly applied in environmental testing to monitor nickel levels in water, soil, and industrial effluents. Also utilized in quality control processes within the metallurgy and electroplating industries to ensure compliance with material specifications and regulatory standards. Suitable for use in research and development for method validation and trace metal analysis.