Hanna-instruments HI 903 Manuel d'utilisateur

1QUICK START GUIDEHI 903KARL FISCHERVOLUMETRIC TITRATORRevision 1.11www.hannainst.com

10QUICK START GUIDEBEFORE PERFORMING THE FIRST TITRATIONSetup the Titrator• Make sure that all of the titrator assemblies are properly installed (see

6-8TITRATIONAutomatic Mass Acquisition from Analytical BalanceIt is available only for Sample Mass and Sample Volume types.The sample size can be auto

6-9TITRATIONThe titrator returns to the previous screen and the sample size is automatically updated.Now the analysis can be started.Start AnalysisPre

6-10TITRATIONViewing the Titration CurveDuring a titration, the titration curve can be displayed on the Titration Graph screen, bypressing . The titr

6-11TITRATIONAveraging Sample Analysis ResultsBy pressing , results will be added to the Sample Analysis History in order to obtainan average of tit

6-12TITRATIONAdding the standard: The user must add the standard into the beaker and enter thestandard size. The units of sample size are determined b

6-13TITRATIONAveraging Titrant Standardization ResultsBy pressing results can be added to the sample analysis history in order to obtain anaverage o

6-14TITRATION

7-1AUXILIARY FUNCTIONSChapter 7. Contents7. AUXILIARY FUNCTIONS ... 7-37.1 Air Pu

7-2AUXILIARY FUNCTIONS

7-3AUXILIARY FUNCTIONS7 AUXILIARY FUNCTIONS7.1 Air PumpThe air pump is used to add or remove the solvent in the titration beaker without exposureto at

11QUICK START GUIDEHOW TO PERFORM THE FIRST TITRATIONMethod SelectionFor this analysis we will use the HI8301EN Solvent with 5mg/ml 1-componentTitrant

7-4AUXILIARY FUNCTIONS7.2 BuretteTo access the Burette screen, press from the Idle screen.Highlight the desired option and then press .Note: Do not

7-5AUXILIARY FUNCTIONSTo prime the burette, select Prime Burette from the Burette screen. Enter the number ofrinses and press .The number of burette

7-6AUXILIARY FUNCTIONSThe manual dispense volume must be between the limits shown below:0.001 to 4.500 mL for a 5-mL burette7.2.4 Purge BuretteThi

7-7AUXILIARY FUNCTIONS7.4 ResultsTo access the “Data Parameters” screen, press button.From the Data Parameters screen you can access the following o

7-8AUXILIARY FUNCTIONS7.4.2 Review Available ReportsUp to 100 reports can be saved on the titrator. To view one of the saved reports highlight areport

7-9AUXILIARY FUNCTIONSOperator Name:Allows the operator name to be recorded in each report.Electrode Name:Allows the electrode name to be recorded in

7-10AUXILIARY FUNCTIONS7.4.5 Setup Titration ReportCustomize a unique report to record the titration results. An asterisk means that it will beinclude

8-1MAINTENANCE, PERIPHERALSChapter 8. Contents8 MAINTENANCE, PERIPHERALS ...8-38.1 Burette

8-2MAINTENANCE, PERIPHERALS

8-3MAINTENANCE, PERIPHERALS8 MAINTENANCE, PERIPHERALSThe 5-mL burette included with the titrator exceeds the ISO 8655 standard for the accuratedeliver

12QUICK START GUIDE• Highlight the Setup Titration Report option and press .• Mark the fields to be included with the “*” symbol using the and ke

8-4MAINTENANCE, PERIPHERALS8.1.3 Disassembling the Dispensing Tube and Aspiration TubeBoth the aspiration and the dispensing tubes have a fitting and

8-5MAINTENANCE, PERIPHERALS8.1.5 Cleaning the BuretteTo clean the burette, follow these steps:• If the burette is filled with titrant, remove the aspi

8-6MAINTENANCE, PERIPHERALSWarning: Avoid contact with the titrant with bare hands.Avoid spilling titrant.Clean the external side of the syringe and p

8-7MAINTENANCE, PERIPHERALS8.1.6 Burette Preparation (Filling with Titrant)Before starting a titration, the burette must be properly filled with titra

8-8MAINTENANCE, PERIPHERALS8.3 PeripheralsWarning!Connection/disconnection of POWER CORD, PUMP ASSEMBLY, EXTERNAL PCDISPLAY, PRINTER, RS232 INTERFACE

8-9MAINTENANCE, PERIPHERALS8.3.1 Connecting an External DisplayThe information shown on the titrator display can be viewed also on a Standard VGA disp

8-10MAINTENANCE, PERIPHERALSThe correspondence between the Titrator’s Keypad and the United States 101-type externalkeyboard are:External PC Keyboard(

8-11MAINTENANCE, PERIPHERALS8.3.3 Connecting a PrinterA variety of parallel printers can be connected to the parallel port of the titrator using astan

8-12MAINTENANCE, PERIPHERALSSelect the USB Link with PC screen on the titrator by following the path:General Options - USB Link with PCLaunch the HI 9

9-1METHODS OPTIMIZATIONChapter 9. Contents9 OPTIMIZATION ... 9-39.1

13QUICK START GUIDESolid Samples:• Solid samples with larger pieces may need to be pulverized or ground in an analyticalmill. These samples can be add

9-2METHODS OPTIMIZATION9.2.4 Liquid Samples ... 9-119.2.5 Sample

9-3METHODS OPTIMIZATION9 OPTIMIZATION9.1 Titration SettingsThe default settings included with the standard methods have been developed by HannaInstrum

9-4METHODS OPTIMIZATIONThe table that follows correlates endpoint potential ranges for each of the possible polarizationcurrent settings of the HI 903

9-5METHODS OPTIMIZATIONexcess iodine will result in a steep drop in electrode potential which will be interpreted by theHI 903 as an approaching endpo

9-6METHODS OPTIMIZATION9.1.1.4 Start ModeThe HI 903 can be set to either normal or cautious start mode. The cautious start feature isdesigned to preve

9-7METHODS OPTIMIZATIONdrift-based termination, the HI 903 incorporates two drift stop termination criteria whichterminate titrations when the drift r

9-8METHODS OPTIMIZATION9.1.3 Method Options9.1.3.1 Pre-dispensing AmountIt is possible to shorten titration times by adding a large fraction of the ti

9-9METHODS OPTIMIZATION9.2 The Sample9.2.1 Proper Sampling ProcedureProper sampling is essential for accurately determining the water content of bulk

9-10METHODS OPTIMIZATIONThe ideal sample size can be estimated using the table by drawing a line from the expectedwater content to the amount of water

9-11METHODS OPTIMIZATIONCare should be taken to add a solid sample as fast as possible in order to minimize theamount of time that the sample port is

14QUICK START GUIDEUnderstanding the Displayed InformationDuring a titration, the following screen is displayed:Viewing Graph During TitrationPress

9-12METHODS OPTIMIZATIONvessel or other internal components of the cell may not be titrated with the rest of the sample.It is equally important that n

9-13METHODS OPTIMIZATIONtitration vessel. Dilutions are carried out using the ‘external dissolution’ sample type option.Anhydrous methanol is the solv

9-14METHODS OPTIMIZATION6. Facilitate extraction by shaking the solution or placing the solution on a stirringplate or in a sonicator.7. Allow the ins

9-15METHODS OPTIMIZATION9.3 Karl Fischer Reagent SystemA wide variety of Karl Fischer reagents exist on the market today, each designed and formulated

9-16METHODS OPTIMIZATIONon the type of alcohol included in the solvent. As the chain length of an alcohol’s alkyl orsubstituted alkyl group increases,

9-17METHODS OPTIMIZATION9.3.4 Standardizing the TitrantStandardizing the Titrant, or determining the titer, is a routine and necessary part ofaccurate

9-18METHODS OPTIMIZATION

A1-1APPENDIX 1Appendix 1. ContentsA1 TECHNICAL SPECIFICATIONS ... A1-3

A1-2APPENDIX 1

A1-3APPENDIX 1A1 TECHNICAL SPECIFICATIONSRange 100 ppm to 100%Resolution 1 ppm to (0.0001%)Result Units %, ppm, mg/g, µg/g, mg, µg, mg/mL, µg/mL,mg/pc

15QUICK START GUIDE• The Review Result screen will be displayed.• Use the and keys to display information related to the last titration performed.

A1-4APPENDIX 1USB Flash Drive Methods and reports can be easily transferred between devicesusing a USB Flash Drive. Software upgrades are made easy.La

A2-1APPENDIX 2Appendix 2. Recommended ReagentsA2 RECOMMENDED REAGENTS ... A2-3A2.1 Titra

A2-2APPENDIX 2

A2-3APPENDIX 2A2 RECOMMENDED REAGENTSA2.1 TitrantsA2.1.1 1-component TitrantsSigma-Aldrich® 34805 HYDRANAL® Composite 534806 HYDRANAL® Composite 23481

A2-4APPENDIX 2A2.2.2 2-component SolventsGFS Chemicals® 1609 WaterMark® Solvent, Methanol-Free1610 WaterMark® Solvent, General PurposeJ.T. Baker® 8855

A3-1APPENDIX 3Appendix 3. AccessoriesA3 TITRATOR COMPONENTS ... A3-3

A3-2APPENDIX 3

A3-3APPENDIX 3HI 900100Pump assemblyHI900570Aspiration TubingHI900580DispensingTubing and fittingHI9005055 mL Burette AssemblyHI900942Tool for Burette

A3-4APPENDIX 3HI900523Dispensing tip, 2pcsHI900528Solvent Port Plugs,2pcsHI900530Titrant Bottle TopAssemblyHI900531Solvent/Waste BottleTop AssemblyHI9

A3-5APPENDIX 3HI900941Calibration KeyHI900803Manual (English) forHI 903HI900900UPC Application on USBFlash DriveHI920013USB Cable

16QUICK START GUIDE• Transferring a report file will automatically transfer the corresponding log file andtitration graph BMP file (if applicable).• P

A3-6APPENDIX 3MAN HI903 10/13

1GENERAL APPLICATIONS BROCHUREHI 903KARL FISCHERVOLUMETRIC TITRATORRevision 1.00www.hannainst.com

Method ID: HI8001EN 5.0 mg/mL Titrant Standardization using a Liquid Water Standard for one-component titrant Titrator Application Methods: Gener

Method ID: HI8001EN 5.0 mg/mL Titrant Standardization using a Liquid Water Standard for one-component titrant Titrator Application Methods: Gener

Method ID: HI8002EN 2.0 mg/mL Titrant Standardization using a Liquid Water Standard for one-component titrant Titrator Application Methods: Gener

Method ID: HI8002EN 2.0 mg/mL Titrant Standardization using a Liquid Water Standard for one-component titrant Titrator Application Methods: Gener

Method ID: HI8003EN 1.0 mg/mL Titrant Standardization using a Liquid Water Standard for one-component titrant Titrator Application Methods: Gener

Method ID: HI8003EN 1.0 mg/mL Titrant Standardization using a Liquid Water Standard for one-component titrant Titrator Application Methods: Gener

Method ID: HI8011EN 5.0 mg/mL Titrant Standardization using Disodium Tartrate Dihydrate for one-component titrant Titrator Application Methods: G

17QUICK START GUIDE Standby Duration: 720 minutes Imposed Current: 20 uA Minimum Dose: 0.5000 uL Maximum Do

Method ID: HI8011EN 5.0 mg/mL Titrant Standardization using Disodium Tartrate Dihydrate for one-component titrant Titrator Application Methods: G

Method ID: HI8101EN Moisture Determination in Dairy Cream Titrator Application Methods: General Methods - r. 0.4 Description: Method for the d

Method ID: HI8101EN Moisture Determination in Dairy Cream Titrator Application Methods: General Methods - r. 0.4 Results: Titration Report Method

Method ID: HI8102EN Moisture Determination in Milk Titrator Application Methods: General Methods - r. 0.4 Description: Method for the determin

Method ID: HI8102EN Moisture Determination in Milk Titrator Application Methods: General Methods - r. 0.4 Results: Titration Report Method Name:

Method ID: HI8103EN Moisture Determination in Honey Titrator Application Methods: General Methods - r. 0.4 Description: Method for the determinat

Method ID: HI8104EN Surface Moisture Determination on White Sugar Titrator Application Methods: General Methods - r. 0.4 Description: Method for

Method ID: HI8104EN Surface Moisture Determination on White Sugar Titrator Application Methods: General Methods - r. 0.4 Results: Titration Repor

Method ID: HI8105EN Moisture Determination in Cooking Oil Titrator Application Methods: General Methods - r. 0.4 Description: Method for the dete

18QUICK START GUIDEQS 90310/13

Method ID: HI8105EN Moisture Determination in Cooking Oil Titrator Application Methods: General Methods - r. 0.4 Results: Titration Report Method

Method ID: HI8106EN Moisture Determination in Butter by external dissolution Titrator Application Methods: General Methods - r. 0.4 Description:

Method ID: HI8106EN Moisture Determination in Butter by external dissolution Titrator Application Methods: General Methods - r. 0.4 Method Parame

Method ID: HI8107EN Moisture Determination in Margarine by external dissolution Titrator Application Methods: General Methods - r. 0.4 Descriptio

Method ID: HI8107EN Moisture Determination in Margarine by external dissolution Titrator Application Methods: General Methods - r. 0.4 Method Par

Method ID: HI8108EN Moisture Determination in Mayonnaise by external extraction Titrator Application Methods: General Methods - r. 0.4 Descriptio

Method ID: HI8108EN Moisture Determination in Mayonnaise by external extraction Titrator Application Methods: General Methods - r. 0.4 Method Par

Method ID: HI8201EN Moisture Determination in Shampoo Titrator Application Methods: General Methods - r. 0.4 Description: Method for the determin

Method ID: HI8201EN Moisture Determination in Shampoo Titrator Application Methods: General Methods - r. 0.4 Results: Titration Report Method Nam

Method ID: HI8202EN Moisture Determination in Hand Cream Titrator Application Methods: General Methods - r. 0.4 Description: Method for the de

1INSTRUCTION MANUALHI 903KARL FISCHERVOLUMETRIC TITRATORRevision 1.11www.hannainst.com

Method ID: HI8202EN Moisture Determination in Hand Cream Titrator Application Methods: General Methods - r. 0.4 Results: Titration Report Method

Method ID: HI8301EN Moisture Determination in Solvent with 5 mg/mL Titrant (One-Comp.) for external dissolution or extraction Titrator Applicatio

Method ID: HI8301EN Moisture Determination in Solvent with 5 mg/mL Titrant (One-Comp.) for external dissolution or extraction Titrator Applicatio

1TITRATION THEORYTITRATION THEORYPrinciplesHI 903KARL FISCHERVOLUMETRIC TITRATORRevision 1.0www.hannainst.com

2TITRATION THEORY

3TITRATION THEORYContents1 GENERAL REVIEW OF TITRATION THEORY ... 51.1 Intr

4TITRATION THEORY

5TITRATION THEORY1 GENERAL REVIEW OF TITRATION THEORY1.1 Introduction to TitrationsA titration is a quantitative, volumetric procedure used in analyti

6TITRATION THEORY1.3 Advantages and Disadvantages of TitrationsSome advantages of titrations, as an analytical technique, are:• More precise results t

7TITRATION THEORY2 TYPES OF TITRATIONS2.1 Titrations According to The Measurement Method2.1.1 Amperometric TitrationsAn amperometric titration is perf

2QUICK START GUIDEDear customer,Congratulations on choosing a Hanna Instruments Product.This guide has been written for the HI 903 Karl Fischer Volume

2Dear customer,Congratulations on choosing a Hanna Instruments product.Please read this instruction manual carefully before using the instrument. This

8TITRATION THEORYelectrode, are monitored to show the progress of the titration.Potentiometry is the measurement of a potential under conditions of ze

9TITRATION THEORY2.2 Titrations According to The Reaction Type2.2.1 Karl Fischer TitrationsThis method is based on a well-defined chemical reaction be

10TITRATION THEORYof reaction decreases and titration endpoint become increasingly difficult to reach. If the pHexceeds 8, side reactions begin to occ

11TITRATION THEORYBivoltametric indication involves measuring the voltage required to maintain a constant currentflow between electrode elements. A sm

12TITRATION THEORYFigure 3 shows a traditional titration curve. The curve is obtained by plotting the pH valueagainst the volume of NaOH added.2.2.3 A

13TITRATION THEORYtitrant that binds strongly to it. Often these titrants contain EDTA or CDTA, polydentate ligandsthat form very stable coordination

14TITRATION THEORYcarboxylic acids, enols, phenols, imides, sulfonic acids, and inorganic acids. Water or loweralcohols are suitable for titrating med

15TITRATION THEORYVisual indicators such as Ferrion are also available. The oxidized and reduced form of theindicator will have different colors and c

16TITRATION THEORYABFigure 8.Potential, glass electrode, mVC

17TITRATION THEORY3 INTRODUCTION TO TITRATION APPARATUS AND TYPICALTITRATION PROCEDURE3.1 Manual TitrationApparatus required for manual titration incl

3TABLE OF CONTENTSChapter 1. INTRODUCTIONChapter 2. SETUPChapter 3. USER INTERFACEChapter 4. GENERAL OPTIONSChapter 5. METHODSChapter 6. TITRATIONChap

18TITRATION THEORY3.2 Automatic TitrationAutomatic titrators are high-precision analytical instruments that deliver the titrant, monitorthe physical c

19TITRATION THEORY4 TITRATION RESULTS4.1 AccuracyThe factors most critical to achieving accurate results with the HI 900 titration systems arethe conc

20TITRATION THEORY4.3.2.2 Dispensing ErrorsIncorrect dispensing due to:• Dead valve volume and leaking valve;• Inaccuracy in motor drive and gear lash

21TITRATION THEORY5 CALCULATIONS5.1 Equations Used in Volumetric Karl Fischer Titrations5.1.1 Calculation of water content as % mass from samples meas

22TITRATION THEORY5.1.5 Calculation of water content in External Dissolution SamplesC sample Concentration of Sample (% w/w)m solvent Mass of Solvent

23TITRATION THEORY5.1.9 Calculation of titer (water equivalent of the titrant) using waterstandardsC titrant Titrant Titer (mg/mL)m sample Mass of Sam

24TITRATION THEORYBy MassC titrant Titrant Concentration (N)m standard Mass of Standard (g)Ratio Equivalence ratio of titrant/standard (eq titrant/ mo

25TITRATION THEORY  

26TITRATION THEORY6 GLOSSARYAcidA chemical species that can donate one or more protons (hydrogen ions).Acid-Base TitrationStoichiometric neutralizatio

27TITRATION THEORYEnd pointThe point where a titration is stopped because a physical change in the solution hasindicated a completed titration. Titrat

4

28TITRATION THEORYNeutralizationA chemical reaction where an acid and a base react to form a neutral salt and water.Non-aqueousA solution that does no

29TITRATION THEORYSpectrophotometric TitrationA titration in which the end point is marked by a change in the color and/or colorintensity.Stoichiometr

30TITRATION THEORYTitr THEORY 90309/12

1-1INTRODUCTION1 INTRODUCTIONThe HI 903 is an automatic volumetric Karl Fischer titrator with high accuracy, great flexibilityand repeatability.The ti

1-2INTRODUCTION

2-1SETUPChapter 2. Contents2 SETUP ... 2-32.1 Unpacki

2-2SETUP

2-3SETUP2 SETUP2.1 UnpackingThe titrator and the accessories are shipped in a single box containing:ITEM QUANTITY1 Titrator ...

2-4SETUP10 Waste Bottle Assembly ... 1 pc.• Bottle Cap• Desiccant• Desiccant Cartridge• Fittings, O-rings• T

2-5SETUP• Environment temperatures below 10°C and above 40°C• Explosion hazards6. Have the titrator serviced only by qualified service personnel.2.3 I

3QUICK START GUIDEContentsINTRODUCTION ...3SAFE

2-6SETUP2.3.2 Titrator Rear View2.3.3 Titrator Left-side View

2-7SETUPFigure 12.3.4 Titrator AssemblyNote: Assembly operations must be completed before connecting the titrator to the power supply!2.3.4.1 Connecti

2-8SETUPFigure 2Connect the air pump with the following steps (see Figure 2.):(1) Retrieve the air pump cable (PUMP 2) from inside the right bay. Conn

2-9SETUPFigure 4Figure 3Figure 52.3.4.2 Attaching the BuretteThe 5 mL glass syringe features a highly precise inner diameter, which has been individua

2-10SETUPFigure 62.3.4.3 Attaching the Beaker and Dispensing TipThe titration reaction takes place in a closed, conical, glass beaker, sometimes calle

2-11SETUPFigure 7• Place beaker ring (C) onto beaker support with the notches on top (see Figure 6).•Insert the glass beaker (B) into the beaker ring

2-12SETUP Karl Fischer ElectrodeThe Karl Fischer electrode consists of two parallel, platinum pins sealed into a 10mm diameterglass body. Two steel pi

2-13SETUPExtensionUSBStirrerProbe24VDCOFFONABcDEFGHIJ2.3.4.4 Electrical Connections• Connect the KF electrode to the BNC connector (C).• Connect the p

2-14SETUP2.3.5 Titrant, Solvent, Waste Bottle AssemblyThe bottle top assemblies are equipped with desiccant cartridges containing indicating silicagel

2-15SETUP2.3.5.2 Solvent / Waste Bottle Assembly (HI 900531)Caution: Most Karl Fischer solvents give off harmful vapors.Consult manufacturer’s MSDS fo

4QUICK START GUIDE

2-16SETUP

3-1USER INTERFACEChapter 3. Contents3 USER INTERFACE... 3-33.1 Start U

3-2USER INTERFACE

3-3USER INTERFACE3.1 Start UpOnce the instrument is assembled and installed, follow the steps below to start the titrator:• Connect the instrument to

3-4USER INTERFACE3.2 DescriptionThis chapter describes the basic principles of navigation through the user interface, selectingfields and entering val

3-5USER INTERFACE3.2.1.3 Arrow KeysThese keys have the following functions:• Move the on-screen cursor.• Increase and decrease the stirrer speed and o

3-6USER INTERFACE3.2.3 The Idle ScreenAfter start up and initialization, the first screen displayed is the Idle Screen.Idle Screen fields:Method name:

3-7USER INTERFACE3.2.4 The Process ScreenWhen the user presses while in Idle Screen, all titration related processes are started.The titrator displa

3-8USER INTERFACE3.3 Menu navigation3.3.1 Selecting an OptionTo select an option, simply press the option key below thevirtual key. For example, to ac

3-9USER INTERFACE3.3.4 Saving ModificationsThe Saving Method screen allows the user to save themodifications. To exit from Saving Method screen withou

5QUICK START GUIDEINTRODUCTIONThe HI 903 Karl Fischer volumetric titrator is extremely flexible, capable of performing awide variety of highly accurat

3-10USER INTERFACE

4-1GENERAL OPTIONSChapter 4. Contents4 GENERAL OPTIONS ... 4-34.1 Date and

4-2GENERAL OPTIONS

4-3GENERAL OPTIONS4 GENERAL OPTIONSThe General Options screen gives access to options that are not directly related to thetitration process. To access

4-4GENERAL OPTIONS4.2 Display SettingsThis screen allows the user to customize the viewing features of the display.Option Keys:Increases the backlight

4-5GENERAL OPTIONS4.3 BeeperThis screen allows the user to turn the Beeper On (Enable) or Off (Disable).The beeper will sound after a titration is com

4-6GENERAL OPTIONS4.5 LanguageSelect an available language.4.6 Estimated Cell VolumeThis screen allows the user to enter the estimated volume of solut

4-7GENERAL OPTIONS4.7 Titrant DatabaseThis screen allows the user to store information about all of the titrants available for use,including the titra

4-8GENERAL OPTIONS4.9 Save Files to USB Storage DeviceThis option allows the user to save files from titrator to a USB storage device.On the titrator,

4-9GENERAL OPTIONS4.10 Restore Files from USB Storage DeviceThis screen allows the user to transfer files from the USB storage device to the titrator.

6QUICK START GUIDESAFETY MEASURESThe following safety measures must be followed:1. Never connect or disconnect the pump assemblies with the titrator t

4-10GENERAL OPTIONS4.11 USB Link with PCThe USB Link feature is useful to transfer methods/reports directly to/from a PC. To use thisfeature, connect

4-11GENERAL OPTIONSDisconnect the KF electrode, then connect the HI 900941 calibration key to the electrodeinput (BNC connector).Depending on which pa

4-12GENERAL OPTIONSConfigure the settings on the titrator Balance Configuration menu to match the settings foryour particular balance (baud rate, dat

4-13GENERAL OPTIONS4.15 Reset to Default SettingsThis option restores the manufacturer settings.Note: Please be careful!!! This will also delete all t

4-14GENERAL OPTIONS

5-1METHODSChapter 5. Contents5 METHODS ... 5 - 35.1 Select

5-2METHODS5.5.11.3 Concentration Unit ...5 - 165.5.11.4 Water Con

5-3METHODS5 METHODSAll of the parameters required to complete an analysis are grouped into a method.The titrator is supplied with a pack of standard m

5-4METHODSFrom PC:Unnecessary Standard Methods can be removed from the titrator using the HI 900 PCapplication (see Section 4.9, USB Link with PC).5.2

5-5METHODS5.2.3 Restoring the Standard Methods to the Manufacturer SettingsYou can restore the standard method to the manufacturer setting by highligh

7QUICK START GUIDETITRATOR CONNECTIONSFront ViewRear View

5-6METHODSNote: Only a limited number of user methods can be generated. The titrator can hold 100methods (standard and user). When it is reached, a wa

5-7METHODSSave method:After making modifications highlight Save Method and press .After making modifications, press and select Save Method to keep

5-8METHODS5.5.2 Method RevisionThis option allows you to enter a string representing the current method revision. Therevision string format should be

5-9METHODS5.5.4 Predispensing AmountThe titration time can be shortened by adding a large fraction of the titrant at the start of theanalysis, if the

5-10METHODS5.5.6 Stirring SpeedThe stirring speed can be set between 200 and 2000 RPM with a resolution of 100 RPM.The stirrer will remain on, as long

5-11METHODS5.5.8 Drift EntryAllows the user to choose the drift entry mode that is used during the titration process:Automatic - the drift rate will b

5-12METHODS5.5.9 Solvent NameThe user can enter a name for the solvent (up to 15 characters). Use the arrow keys tonavigate through the character tabl

5-13METHODS5.5.10.1 Sample DeterminationThis screen allows the user to select the sample determination mode.Normal sample determination is performed t

5-14METHODS5.5.10.3 Sample TypeThis option allows the user to select the type of the sample: mass, volume or pieces.This information is used to determ

5-15METHODS5.5.10.5 External Solvent Size ( External Dissolution/Extraction Determination Modes Only).Enter the mass of the solvent used for external

8QUICK START GUIDEUSER INTERFACEKeypadThe titrators have their own keypad with 29 keys grouped in four categories, as follows:DisplayThe titrators hav

5-16METHODSHanna Standard Methods (Titrant standardizations only) are designed to be used with standardsof specific types and water contenets. The HI9

5-17METHODSBefore the titrant standardization is started, the user is asked again to enter the standard size.The standard size (mass and volume) can b

5-18METHODSHanna Standard Methods are designed to be used with titrants of specific types andconcentrations. The HI 903 will automatically select an a

5-19METHODS5.5.13.4 Standardized Titrant ConcentrationThe user can manually enter the exact titrant concentration.5.5.13.5 Titrant Age ReminderThe use

5-20METHODS5.5.14.1 Start ModeThe user can select the starting mode for the titration. In Cautious mode, the titrant dosingbegins with the minimum dos

5-21METHODS5.5.14.3 Standby DurationThe user can enter the period of time which the cell is kept dry and ready for subsequentanalysis after a titratio

5-22METHODS5.5.14.5 Dosing ParametersThe user can set the minimum and maximum volume of titrant / dose.The titrant min and max dose values are determi

5-23METHODS5.5.14.7 End Point ValueThis option defines the mV value at which the titration equivalence point (endpoint) has beenreached.The pre-titrat

5-24METHODS5.5.14.9 Flow RateThe flow rate for the dosing system can be set by the user in an interval of 0.1 to two timesthe burette volume: 0.1 to 1

5-25METHODS5.5.15.1 Maximum DurationSpecify the maximum time a titration is allowed to run. Once this point is reached thetitration will be terminated

9QUICK START GUIDEHOW TO SELECT YOUR LANGUAGETo change the language, press from the mainscreen. Highlight the Language option and thenpress . Using

5-26METHODS5.5.15.3 Termination CriterionThis screen allows the user to set the titration termination criterion.mV End Point The titration is terminat

5-27METHODS5.5.16 Result UnitThe titrator provides the results based on the selected units.5.6 PrintingTo print method parameters, press from the ma

5-28METHODS

6-1TITRATIONChapter 6. Contents6 TITRATION ... 6-36.1 Idle ..

6-2TITRATION

6-3TITRATION6 TITRATION6.1 IdleThe titrator first enters Idle mode when it is switched on. All of the HI 903’s software featuresand adjustable paramet

6-4TITRATIONDuring the pre-titration the user cannot change the currently selected method or access themethod parameters.Note: If the pre-titration la

6-5TITRATION6.4 StandbyAfter the drift rate has been determined, the HI 903 moves into Standby mode. In standbymode the dryness of the titration cell

6-6TITRATION6.5 Sample AnalysisWhile in Standby mode, press .Note: If the drift value is zero a warning message appears to inform the user that theso

6-7TITRATIONManual EnteringFollow the steps below:Sample size by mass:1. Measure the mass of the sample in a weigh boat or syringe.2. Slide the sample