The benefits of NIRS in the quality control of mixed acids

Quality control of semiconductor acid baths as per ASTM E1655 – Time- and cost-efficient with NIRS

This free white paper describes the benefits of assessing the quality of acid baths for etching of microelectronics and printed electronics using near-infrared spectroscopy (NIRS). The following topics will be covered:

  • Basics of NIRS
  • Comparison of NIRS with other methods for acid bath quality control, e.g., thermometric titration
  • Benefits of NIRS over thermometric titration (i.e., time and cost savings)
  • Example of a NIRS measurement setup to analyze acid concentrations

Quality control of mixed acids – Fast and reliable detection of phosphoric, sulfuric, nitric, hydrofluoric, acetic, and nitric acids

The two free application notes explain how NIRS can be used for the fast and safe determination of acid concentrations in mixtures composed of two to four acids, using as an example H3PO4, H2SO4, HNO3, and HF as well as AcOH, HF, and HNO3 mixtures.


Near-infrared spectroscopy (NIRS) for time savings and cost savings in quality control of mixed acids.

Complete this form to learn more about the benefits of NIRS for the semiconductor industry

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