Easley, R.
and Place, B.
(2017),
Mass spectra of sulfonephthalein pH indicator dyes and their impurities, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/jres.122.021, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=922064 (Accessed May 15, 2026)
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Mass spectra of sulfonephthalein pH indicator dyes and their impurities
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Journal of Research (NIST JRES) -
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122
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NIST Pubs
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Created April 26, 2017, Updated May 7, 2026