eutech-instruments bromide epoxy User Manual
Instruction Manual
Bromide Electrode
3
EUTECH INSTRUMENTS PTE LTD.
BROMIDE ION ELECTRODE
INSTRUCTION MANUAL
GENERAL INSTRUCTIONS
Introduction
Eutech Instruments Bromide Electrode is used to measure free bromide ion 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.
meter in the mV mode.
3.
A magnetic stirrer.
4.
Eutech Bromide Ion Combination Epoxy-body Electrode, Code no. EC-BRO-03.
5.
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 Ionic Strength Adjuster (ISA), 5M NaNO
3
, Code no. EC-ISA-BR1-BT. To prepare
this solution from your own laboratory stock, half-fill a 1,000 ml volumetric flask with
distilled water and add 425 grams of reagent-grade sodium nitrate. Swirl the flask gently to
dissolve the solid. Fill to the mark with distilled water, cap, and upend the flask several
times to mix the solution.
distilled water and add 425 grams of reagent-grade sodium nitrate. Swirl the flask gently to
dissolve the solid. Fill to the mark with distilled water, cap, and upend the flask several
times to mix the solution.
3.
Eutech Bromide Standard, 0.1M NaBr, Code no. EC-SCS-BR1-BT. To prepare this
solution from your own laboratory stock, half-fill a one liter volumetric flask with distilled
water and add 10.3 grams of reagent-grade sodium bromide, NaBr. Swirl the flask gently
to dissolve the solid. Fill to the mark with distilled water, cap, and upend several times to
mix the solution.
solution from your own laboratory stock, half-fill a one liter volumetric flask with distilled
water and add 10.3 grams of reagent-grade sodium bromide, NaBr. Swirl the flask gently
to dissolve the solid. Fill to the mark with distilled water, cap, and upend several times to
mix the solution.
4.
Eutech Bromide Standard, 1,000 ppm Br-
1
, Code no. EC-SCS-BR2-BT. To prepare this
solution from your own laboratory stock, half-fill a one liter volumetric flask with distilled
water and add 1.29 grams of reagent-grade NaBr. 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.
water and add 1.29 grams of reagent-grade NaBr. 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.