Thermo Fisher Scientific Ion Selective Electrodes Fluoride - Manual (Page 4)

Instruction Manual Fluoride Electrode
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EUTECH INSTRUMENTS PTE LTD.
FLUORIDE ION ELECTRODE
INSTRUCTION MANUAL
GENERAL INSTRUCTIONS
Introduction
Eutech Instruments Fluoride Ion Electrode is used to measure fluoride ions in aqueous solutions
quickly, simply, accurately, and economically.
Required Equipment
1. A pH/mV meter or an ion meter, either line operated or portable.
2.
Semi-logarithmic 4-cycle graph paper for preparing calibration curves when using the
meter in the mV mode.
3.
A magnetic stirrer.
4.
Eutech Fluoride Ion Combination Epoxy-body Electrode, Code no. EC-FO-03.
5.
Lab-ware made of plastic, not glass.
6.
Polishing Paper, Code no. EC-MIS-PP, to polish dirty or etched electrode membranes.
Required Solutions
1. Deionized or distilled water for solution and standard preparation.
2.
Eutech Fluoride Standard Solution, 0.1 M NaF, Code No. EC-SCS-FL1-BT. To prepare
this solution from your own laboratory stock, half fill a one liter volumetric flask with
distilled water and add 4.2 grams of reagent-grade sodium fluoride. Swirl the flask gently
to dissolve the solid. Fill the flask to the mark with distilled water, cap, and upend several
times to mix the solution.
3.
Eutech Fluoride Standard, 1,000 ppm F
-1
, Code No. EC-SCS-FL2-BT. To prepare this
solution from your own laboratory stock, half fill a one liter volumetric flask with distilled
water and add 2.21 grams of reagent-grade sodium fluoride. Swirl the flask gently to
dissolve the solid. Fill the flask to the mark with distilled water, cap, and upend several
times to mix the solution.
4.
Eutech Fluoride Standard, 100 ppm F
-1
, Code No. EC-SCS-FL3-BT. To prepare this
solution from you own laboratory stock, half fill a one liter volumetric flask with distilled
water and add 0.22 grams of reagent-grade sodium fluoride. Swirl the flask gently to
dissolve the solid. Fill the flask to the mark with distilled water, cap, and upend several
times to mix the solution.