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 wastewater. Also utilized in industrial quality control for metal plating, alloy production, and semiconductor manufacturing to ensure process consistency and compliance with regulatory standards. Suitable for titration procedures and trace metal analysis where precise nickel quantification is required.