pH measurement of low-conductivity waters
Water-Resources Investigations Report
87-4060
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Abstract
pH is an important and commonly measured parameter of precipitation and other natural waters. The various sources of errors in pH measurement were analyzed and procedures for improving the accuracy and precision of pH measurements in natural waters with conductivities of < 100 uS/cm at 25 C are suggested. Detailed procedures are given for the preparation of dilute sulfuric acid standards to evaluate the performance of pH electrodes in low conductivity waters. A daily check of the pH of dilute sulfuric acid standards and deionized water saturated with a gas mixture of low carbon dioxide at partial pressure (air) prior to the measurement of the pH of low conductivity waters is suggested. (Author 's abstract)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | pH measurement of low-conductivity waters |
| Series title | Water-Resources Investigations Report |
| Series number | 87-4060 |
| DOI | 10.3133/wri874060 |
| Edition | - |
| Year Published | 1987 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey ; Books and Open-File Reports [distributor], |
| Description | iv, 22 p. :ill. ;28 cm. |
| Google Analytic Metrics | Metrics page |