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Summary of Contents for Hanna Instruments HI 4111
- Page 1 HI 4011 Instruction Manual HI 4011 HI 4011 HI 4011 HI 4011 HI 4011 Half-cell HI 4111 HI 4111 HI 4111 HI 4111 HI 4111 Combination Iodide Ion Selective Electrode...
- Page 2 HI 4011 Iodide Half-cell HI 4011 Iodide Half-cell HI 4011 Iodide Half-cell HI 4011 Iodide Half-cell HI 4011 Iodide Half-cell HI 4111 Iodide Combination Electrode HI 4111 Iodide Combination Electrode HI 4111 Iodide Combination Electrode HI 4111 Iodide Combination Electrode HI 4111 Iodide 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 4011 or HI 4111 Iodide electrodes are potentiomet- ric devices used for the rapid determination of free Iodide ions in food products, plants, and as an indicator in titra- tions.
- Page 4 IV. IV. IV. IV. IV. Design elements of the HI 4011and HI 4111 Design elements of the HI 4011and HI 4111 Design elements of the HI 4011and HI 4111 Design elements of the HI 4011and HI 4111 Design elements of the HI 4011and HI 4111 electrodes 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 4011. 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 4011 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 4111 Remove the protective plastic wrap that covers the ceramic junction before assembling sensor for the first time.
- Page 8 VIII. VIII. Electrode Preparation VIII. Electrode Preparation Electrode Preparation Electrode Preparation VIII. VIII. Electrode Preparation HI 4011 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. Standards 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 XII. Other Measurement T Other Measurement Techniques echniques echniques Known Addition (for I 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 An iodide electrode may be used as an indicator to follow the progress and detect the endpoint of a titration of iodide containing samples with silver nitrate. The electrode can be used in colored samples, or high or variable ionic strength samples to increase accuracy of the determination.
- Page 15 XV XV XV XV XV..Conversion T Conversion T Conversion T Conversion Tables ables ables ables Conversion T ables - - - - - For I For I For I For I For I Multiply by Multiply by Multiply by Multiply by...
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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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