pH meter: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Add new Web site: National Center for Biotechnology Information - PubMed Central - On Calibration of pH Meters. | Mar 22, 2024 | ||
| Added photograph of a pH meter. | Apr 01, 2021 | ||
| Changed “usually a mercury-mercurous chloride (calomel) electrode, although a silver-silver chloride electrode” to “usually a silver-silver chloride electrode, although a mercury-mercurous chloride (calomel) electrode.” | Apr 01, 2021 | ||
| Add new Web site: Hach Company - pH Meters. | Jul 09, 2012 | ||
| Add new Web site: British Broadcasting Corporation - The pH scale. | Jul 09, 2012 | ||
| New article added. | Feb 05, 2009 |
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