Hanna Instruments HI 4011 Скачать руководство пользователя страница 15 | Manualshive

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Hanna Instruments HI 4011 Скачать руководство пользователя страница 15

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. Conversion T

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Conversion Tables

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For I

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Multiply by

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Moles/L (M) to ppm (mg/L)

1.269 x 10

5

ppm (mg/L) to M (moles/L)

7.88 x 10

-6

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Содержание HI 4011

Страница 1: ...1 HI 4011 HI 4011 HI 4011 HI 4011 HI 4011 HI 4111 HI 4111 HI 4111 HI 4111 HI 4111 Iodide Ion Selective Electrode Instruction Manual Half cell Combination IODIDE HI 4011 HI 4111 IODIDE COMBINATION ...

Страница 2: ...olutions The HI 4011 is a solid state half cell sensor that requires a separate reference The HI 4111 is a combination ion selective electrode II II II II II Specifications Specifications Specifications Specifications Specifications Type Solid State electrode with a Silver Iodide pellet Ion s measured Iodide I Measurement range 1 0 M to 1 X 10 7 M 127 000 to 0 01 ppm Interfering ions Cyanide and M...

Страница 3: ...incorporates a reference electrode The Silver Iodide pellet is practically insoluble in the test solutions being measured and pro duces a potential change due to changes in the sample s ion activity When the ionic strength of the sample is fixed by the addition of ISA the voltage is proportional to the concentration of iodide ions in solution and the electrode follows the Nernst equation E Ea 2 3 ...

Страница 4: ...HI 4111 Design elements of the HI 4011and HI 4111 Design elements of the HI 4011and HI 4111 electrodes electrodes electrodes electrodes electrodes Upper Cap Spring O Ring Ceramic Junction on Inner Stem Fill Hole O Ring and Plug Sensing Membrane Outer Sleeve Upper Threads Liquid junction IODIDE HI 4011 Cap Sensing Membrane Sensor Handle ...

Страница 5: ...ide Measurements for Iodide Measurements for Iodide Measurements for Iodide Measurements for Iodide Measurements 0 1 M Iodide Standard 500 mL HI4011 01 ISA 500 mL HI4000 00 ForMolarsolutions Using volumetric pipettes and glassware make serial dilu tions to approximately bracket the concentration of the samples Standards with concentrations 10 3 M should be prepared daily Two mL of Hanna ISA for Ha...

Страница 6: ...containing standard or sample from magnetic stirrer by placing cork or other insulative sheet between beaker and stirrer plate Calibration standards and sample solutions should be stirred at the same rate using identical sized TFE coated stir bars Rinse electrode pair with distilled or deionized water between samples and gently dab dry with soft dis posable absorbent toweling Do not rub electrodes...

Страница 7: ...te electrode with the fill hole open During normal use fill solution will slowly drain out ofthetaperedconejunctionatthelowerportionofthe electrode Excessiveloss 4cmdropwithin24hours isnotnormal Ifthisoccursverifycapistightenedand the interface between the internal cone and outer body is free of debris Add fill solution daily to maintain a good head pres sure Foroptimumresponse thislevelshouldbema...

Страница 8: ...ilm seal found over ceramic junction on inner stem and discard This is only used for ship ping and long term storage 2 Rinseinnerstemwithdeionizedwatermakingcertain to wet the o ring found on the inner stem 3 Reassemble electrode by gently pushing the inner assembly into the outer body sliding spring down cable and screwing cap into place 4 Remove fill hole cover and o ring on fill hole spout 5 Us...

Страница 9: ... and verify elec trodereturnstoitsoriginalposition Youmayneedto gently assist for this to occur 7 Tighten the electrode cap onto the body and fill elec trode body until fill solution volume is just below fill hole 8 Position electrode in a Hanna HI 76404 electrode holder or equivalent and connect plug to meter HI 41 11 IO DI DE CO MB IN AT IO N ...

Страница 10: ...rrective action Corrective action Verify protective cap has been removed HI 4011 Verify plastic film has been removed from inner stem HI4111 Verify electrodes are connected properly to meter and meterispowered Verify dilute standards are freshly made and stored Remake solutions if appropriate If the sensor slope just misses the suggested slope window soaking the sensor in a dilute standard may sol...

Страница 11: ...arerequiredinnon linear regions Unknowns are read directly At very low levels of Iodide special precautions must be employed for reproducible measurements Water used for standards must be Iodide free and sensors and glassware must be rinsed repeatedly with this water to prevent carry over It is advised that deareated water be used on the lower concentration standards to prevent oxidation of io did...

Страница 12: ...surements 3 Follow sectionVII GeneralGuidelinestooptimizetest set up 4 Duringcalibrationitisbesttostartwithlowerconcen tration samples first Wait for a stable measurement before recording values Slightly longer equilibra tions are required at lower concentrations 5 To prevent carry over and contamination of samples rinse sensors with deionized water and dab dry be tween samples TypicalLinearityof ...

Страница 13: ... method is preprogrammed in the Hanna HI 4222 pH ISE mV meter which simplifies the method greatly Example Iodide ion determination in samples with con centrations less than 5 X 10 4 M using known addition 1 A 50 mL sample of unknown Vsample is placed in a clean plastic beaker with a iodide sensor 2 mL of HI 4000 00 ISA VISA is added to the 50 mL sample and allowed to mix The stable mV value mV 1 i...

Страница 14: ...les that fall beyond this range should be adjusted Titration XIV S XIV S XIV S XIV S XIV Storage and Care of the HI 4011 and torage and Care of the HI 4011 and torage and Care of the HI 4011 and torage and Care of the HI 4011 and torage and Care of the HI 4011 and HI 4111 sensors HI 4111 sensors HI 4111 sensors HI 4111 sensors HI 4111 sensors The HI 4011 sensor can be stored in very dilute standar...

Страница 15: ...onversion T Conversion T Conversion T Conversion Tables ables ables ables ables For I For I For I For I For I Multiply by Multiply by Multiply by Multiply by Multiply by Moles L M to ppm mg L 1 269x105 ppm mg L to M moles L 7 88x10 6 ...

Страница 16: ...or 6 monthsfromdateofpurchasewhenusedfortheirintended purpose and maintained according to instructions If they failtoworkwhenfirstusedcontactyourdealerimmediately Damageduetoaccidents misuse misapplication tampering or lack of prescribed maintenance is not covered HannaInstrumentsreservestherighttomodifythedesign constructionorappearanceofitsproductswithoutadvance notice ...

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