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Summary of Contents for Hanna Instruments HI 4102
- Page 1 HI 4002 Instruction Manual HI 4002 HI 4002 HI 4002 HI 4002 HI 4002 Half-cell HI 4102 HI 4102 HI 4102 HI 4102 HI 4102 Combination Bromide Ion Selective Electrode...
- Page 2 HI 4002 Bromide Half-cell HI 4002 Bromide Half-cell HI 4002 Bromide Half-cell HI 4002 Bromide Half-cell HI 4002 Bromide Half-cell HI 4102 Bromide Combination Electrode HI 4102 Bromide Combination Electrode HI 4102 Bromide Combination Electrode HI 4102 Bromide Combination Electrode HI 4102 Bromide Combination Electrode I.
- Page 3 III. III. III. III. III. Theory of Operation Theory of Operation Theory of Operation : : : : : Theory of Operation Theory of Operation The HI 4002 or HI 4102 Bromide electrodes are potentio- metric devices used for the rapid determination of free Bro- mide ions in food products, beverages, plants, soils and as an indicator in titrations.
- Page 4 IV. IV. IV. IV. IV. Design elements of the HI 4002 and HI 4102 Design elements of the HI 4002 and HI 4102 Design elements of the HI 4002 and HI 4102 Design elements of the HI 4002 and HI 4102 Design elements of the HI 4002 and HI 4102 electrodes electrodes...
- Page 5 V. V. V. V. V. Equipment required: Equipment required: Equipment required: Equipment required: Equipment required: Hanna HI 5315 Double Junction Reference Electrode with HI 7072 Fill Solution for HI 4002. Hanna HI 4222 pH/ISE/mV meter or other suitable ion or pH/mV meter. (Note: log/linear graph paper is useful if an ISE (ion) meter is not available).
- Page 6 VII VII VII VII VII. General Guidelines General Guidelines General Guidelines General Guidelines General Guidelines Calibration standards and sample solutions should have the same ionic strength. ISA should be added to both samples and standards in the same ratio. 1 part ISA to 50 parts standard is the normal dosing.
- Page 7 HI 4002 Remove protective cover from sensor tip. Prepare HI 5315 reference electrode by filling electro- lyte reservoir with HI 7072 fill solution. Place sensor and reference electrodes into electrode holder and connect cable connectors to meter. HI 4102 Remove the protective plastic wrap that covers the ceramic junction before assembling sensor for the first time.
- Page 8 VIII. VIII. Electrode Preparation Electrode Preparation VIII. VIII. Electrode Preparation VIII. Electrode Preparation Electrode Preparation HI 4002 1. Remove protective cover from sensor tip. 2. Prepare reference electrode by filling outer electrolyte reservoir with HI 7072. 3. Place sensor and reference electrodes into electrode holder and connect cable connectors to meter.
- Page 9 6. Holding the body of the electrode gently press upper cap with your thumb. This permits the fill solution to drain out of the body. Release cap and verify elec- trode returns to its original position. (You may need to gently assist for this to occur).
- Page 10 IX. IX. IX. IX. IX. Quick Check of Electrode Slope Quick Check of Electrode Slope Quick Check of Electrode Slope Quick Check of Electrode Slope Quick Check of Electrode Slope Connect sensors to pH/mV/ISE meter Place meter in mV mode. Place 100 mL of DIW into a beaker with stir bar.
- Page 11 If the membrane is damaged, the response becomes extremely sluggish, or the slope of the electrode has decreased significantly, and procedures above have not helped, the sensor should be replaced. XI. XI. XI. XI. XI. Direct Calibration and Measurement Direct Calibration and Measurement Direct Calibration and Measurement Direct Calibration and Measurement Direct Calibration and Measurement...
- Page 12 Procedure 1) Follow sections VIII and IX to prepare sensors for measurement. 2) Follow section VI to prepare standards/ solution. Stan- dards should bracket and fall within the range of interest. Two mL HI 4000-00 ISA, is added to 100 mL of both samples and standards Add stir bar and mix before taking measurements.
- Page 13 XII. XII. XII. XII. Other Measurement T Other Measurement T Other Measurement T echniques echniques Other Measurement T echniques echniques XII. Other Measurement T echniques Known Addition (for Br An unknown concentration can be determined by adding a known amount (volume and concentration) of measured ion to a known volume of the sample.
- Page 14 Titration Titration Titration Titration Titration A bromide electrode may be used as an indicator to follow the progress of a bromide tiration with silver nitrate. The electrode can be used in colored samples where other indicators suffer from interferences. During the titration the sensor follows the decrease in bromide concentration while small additions of silver nitate titrant are added.
- Page 15 XV XV XV XV XV ..Conversion T Conversion T Conversion T ables ables Conversion T ables ables Conversion T ables - - - - - For Br For Br Multiply by Multiply by For Br Multiply by For Br For Br...
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Page 16: Warranty
Damage due to accidents, misuse, misapplication, tampering or lack of prescribed maintenance is not covered. Hanna Instruments reserves the right to modify the design, construction or appearance of its products without advance notice.
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