Analytical Suite Metadata

Chemex (surface water) Orion ISE (F)

Chemex, surface water; ion-selective electrode (fluorine).  The fluoride was measured using a model 401 Orion specific ion meter with an Orion fluoride electrode.

General Methodology:

Fluoride in water samples was determined using an Orion fluoride electrode and a model 401 Orion specific ion meter.  Prior to measurement, an aliquot of the sample was mixed with an equal volume of a modified TISAB solution (total ionic strength adjustment buffer).  The modification consisted of adding 60 ml 8 M KOH solution to the buffer.  This permitted the re-analysis of fluoride in acidified water samples when required.  When this analysis was required, acidified standard solutions were used for calibration.


Sample material: aqueous

Sample weight: unstated

Analytical Technique:

Hierarchical classification

Technique >> Electrochemical techniques >> Potentiometry >> Ion-specific electrodes


Glass electrode

Analytical Decomposition:

Hierarchical classification

Decomposition >> None



Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  1074     F_ISE  20

Associated Analytical Packages:

IndexPackage IDPackage Name
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