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Summary of Contents for Hanna Instruments HI 4109
- Page 1 HI 4009 Instruction Manual HI 4009 HI 4009 HI 4009 HI 4009 HI 4009 Half-cell HI 4109 HI 4109 HI 4109 HI 4109 HI 4109 Combination Cyanide Ion Selective Electrode...
- Page 2 HI 4009 Cyanide Half-cell HI 4009 Cyanide Half-cell HI 4009 Cyanide Half-cell HI 4009 Cyanide Half-cell HI 4009 Cyanide Half-cell HI 4109 Cyanide Combination Electrode HI 4109 Cyanide Combination Electrode HI 4109 Cyanide Combination Electrode HI 4109 Cyanide Combination Electrode HI 4109 Cyanide 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 4009 or HI 4109 Cyanide electrodes are potentio- metric devices used for the rapid determination of free Cya- nide ions in effluent, for electroplating bath analysis and as a detector for titration of cyanide with silver nitrate The electrode functions as a sensor or ionic conductor.
- Page 4 IV. IV. IV. IV. IV. Design elements of the HI 4009 and HI 4109 Design elements of the HI 4009 and HI 4109 Design elements of the HI 4009 and HI 4109 Design elements of the HI 4009 and HI 4109 Design elements of the HI 4009 and HI 4109 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 4009. 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 capped plastic bottle. Using volumetric pipettes and glass- ware make dilutions to bracket the concentration of the samples. Store standards in plastic bottles. Standards with concentrations < 10 M should be prepared daily. One mL of Hanna ISA and pH adjuster (HI 4001-00) should be added to each 100 mL of sample or standard.
- Page 7 HI 4000-70. Avoid large changes in temperature (thermal shock) as it may damage the sensor. Gas bubbles may form from solution out-gassing due to temperature change. Gently tap body of sensor to dislodge them from sensing membrane. HI 4009 Remove protective cover from sensor tip. Prepare HI 5315 reference electrode by filling electro- lyte reservoir with HI 7072 fill solution.
- Page 8 VIII. VIII. Electrode Preparation VIII. Electrode Preparation Electrode Preparation Electrode Preparation VIII. VIII. Electrode Preparation HI 4009 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 Use of a hood and protective clothing is strongly advised. Connect sensors to pH/mV/ISE meter Place meter in mV mode.
- 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. One mL HI 4001-00 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 Other Measurement Techniques echniques echniques echniques XII. Other Measurement T echniques Known Addition (for CN 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 A cyanide electrode may be used as an indicator to follow the progress and detect the endpoint of a complexation titration of CN with silver nitrate standard. Time must be allowed for the alkali salt to redissolve and mV to settle. The end point is reached when the formation of insoluble silver cyanoargentate precipitates occurs.
- Page 15 sensor membrane. Store dry disassembled electrode in storage box provided with electrode. XV XV XV XV XV..Conversion T Conversion T Conversion T Conversion Tables ables ables ables Conversion T ables - - - - - For CN For CN For CN...
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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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