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issues_with_ph_measurement [23/09/2019 07:07]
pieter
issues_with_ph_measurement [23/09/2019 07:12]
pieter [Check instrument]
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 Check this list of possible reasons: [[Guide to troubleshooting|Guide to troubleshooting]] Check this list of possible reasons: [[Guide to troubleshooting|Guide to troubleshooting]]
  
 +===== Check electrode =====
 Many measurement problems arise from the electrode or from a wrong use, rarely from the instrument itself. Therefore it is important to: Many measurement problems arise from the electrode or from a wrong use, rarely from the instrument itself. Therefore it is important to:
   * Make sure there is no **air bubble trapped** in the pH sensitive bulb. If this should be the case, shake it  like a clinical thermometer with the bulb downwards to remove it.   * Make sure there is no **air bubble trapped** in the pH sensitive bulb. If this should be the case, shake it  like a clinical thermometer with the bulb downwards to remove it.
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         * When the electrode is fixed to the cable, it is difficult to test it. Look for very irregular behavior when moving the cable.         * When the electrode is fixed to the cable, it is difficult to test it. Look for very irregular behavior when moving the cable.
         * Check whether all contacts of the plugs are all bright and clean.         * Check whether all contacts of the plugs are all bright and clean.
-  ​* Keep your instrument clean, **avoid moisture** on the connectors. ​+ 
 +===== Check instrument ===== 
 +  ​* Keep your instrument clean, **avoid moisture** ​in any case, especially ​on the connectors. ​
   * Do not store the meter in cold humid environments. If so, and a measurement problem arises, please store it free of connections and packaging in a warm dry environment for a few days and try it again.   * Do not store the meter in cold humid environments. If so, and a measurement problem arises, please store it free of connections and packaging in a warm dry environment for a few days and try it again.
 +  * Test the instrument following the manufacturer instructions.
 +
 +===== Check method/​handling =====
   * Follow the [[http://​www.consort.be/​wiki/​ph_measurement_tips#​good_measurement_practices|Good Measurement Practices]] to avoid measurement errors.   * Follow the [[http://​www.consort.be/​wiki/​ph_measurement_tips#​good_measurement_practices|Good Measurement Practices]] to avoid measurement errors.
  
issues_with_ph_measurement.txt · Last modified: 23/09/2019 07:12 by pieter