Agilent, 5190-7001, Calibration blank solution 5% HNO3 for ICP-OES, MP-AES, and AA

The Agilent calibration blank is a prepared 5% nitric acid solution for elemental-analysis workflows using ICP-OES, microwave plasma atomic emission spectroscopy and atomic absorption spectrometry. Its matrix is suitable for establishing an acid-matched baseline and for checking background contamination when standards and samples are prepared in a similar nitric acid concentration. The solution is supplied in a 500 mL bottle and can be incorporated into calibration sequences, blank checks and method verification programs. Use clean, compatible vessels and dedicated transfer equipment to prevent contamination by trace metals. Ensure that the acid content of calibration standards and sample digests is sufficiently comparable to the blank to reduce matrix-related response differences. A calibration blank does not establish a multielement calibration slope or verify trace-metal recovery by itself; fortified standards and quality-control materials remain necessary. Nitric acid is corrosive, so appropriate eye protection, gloves and ventilation are required.