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Van London – pHoenix Company
6103 Glenmont Dr.
Houston, TX 77081
USA

(Toll Free) 800-522-7920
(voice) 713-772-6641
(fax) 713-772-4671

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Brief Guide to Troubleshooting Difficult Measurement Problems TEXT SIZE: A A A    PRINT THIS PAGE   EMAIL THIS PAGE

 

COMPONENTS OF THE ELECTRODE SYSTEM
CONTROLLER Perform the checkout procedure as described in the instruction manual.
ELECTRODE Perform an electrode slope check and inspect the electrode for physical damage. Polish, soak, or rebuild the sensing membrane. Monitor the leak rate on the reference side.
 

PROPER CALIBRATION
STANDARD(S) Prepare fresh standards by serial dilution.
pH ADJUSTMENT Adjust pH to operational range of the electrode.
 

SAMPLE VARIABLES
CONCENTRATION RANGE Is the sample out of range?
PRESSURE Is the sample pressure incorrect?
TEMPERATURE Is the sample temperature incorrect?
pH Is the sample pH incorrect?
INTERFERENCES Are there interferences in the sample?
COMPLEXATION Are there complexing agents in the sample?

 

 
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©2012 Van London-pHoenix Company 6103 Glenmont Dr. Houston, TX 77081
Toll Free: 800-522-7920    Tel: 713-772-6641    Fax:713-772-4671    Email:info@vl-pc.com