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Fluoride Ion Selective Electrode User Guide
Introduction
This user guide contains information on the preparation,
operation and maintenance for the fl uoride ion selective
electrode (ISE). General analytical procedures, electrode
characteristics and electrode theory are also included in this
user guide. Fluoride electrodes measure free fl uoride ions in
aqueous solutions quickly, simply, accurately and economically.
The measurement of fl uoride in drinking water and wastewater
using an ion selective electrode is an EPA approved test
procedure. EPA-approved ISE test procedures for fl uoride in
drinking water are ASTM D1179-04 (B) and Standard Methods
4500-F- C (21st edition). EPA-approved ISE test procedures for
fl uoride in wastewater are ASTM D1179-93, 99 (B) and Standard
Methods 4500-F- C-97 (online) or 4500-F- B (18, 19, 20th
editions). Approved test method lists are updated periodically.
Check with your regulatory agency for latest approve method
revisions.
Technical Support Chemists can be consulted for assistance
and troubleshooting advice. Within the United States call
1.800.225.1480 and outside the United States call 978.232.6000
or fax 978.232.6031. In Europe, the Middle East and Africa,
contact your local authorized dealer. For the most current
contact information, visit www.thermoscientifi c.com/water.
Fluoride ionplus
®
Sure-Flow
®
Solid State Combination ISE
The reference and sensing electrodes are built into one
electrode, which decreases the amount of required solution
and reduces waste. The built-in Sure-Flow reference junction
prevents electrode clogging and provides fast and stabile
readings. The fl uoride ionplus combination ISE is available with
a waterproof BNC connector, Cat. No. 9609BNWP. Electrodes
with a waterproof BNC connector can be used on any ISE meter
with a BNC connection.
Fluoride Solid State Half-Cell ISE
The fl uoride half-cell electrode must be used with the single
junction reference electrode, Cat. No. 900100. The fl uoride
half-cell is available with a BNC connector, Cat. No. 9409BN;
and a screw cap connector, Cat. No. 9409SC. Electrodes with a
screw cap connector require a separate cable.
