Big ORP Article in Water Online

Last month Treatment Plant Operator published an article based on a white paper by Mark Spencer on ORP measurement. The article caught the attention of Water Online editors who decided to run the white paper. You can read the article at

This is the first of 4 installments that explain ORP measurements in some detail but tailored toward non-technical users. Check it out and see why an ORP sensor may be the best kept secret in water quality instrumentation that you've never really used.