Ysi 6000UPG User Manual

6000UPGMulti-ParameterWater Quality MonitorInstruction ManualYSI Incorporated 1725 Brannum Lane Yellow Springs, OH 45387(800)

1-61.4 HOW TO USE THIS MANUALThe manual is organized to let you quickly understand and operate the 6000UPG system. However, itcannot be stressed too

5-28Example: "12/31/92","23:59:59",123.45,12.3,123Select this option to export data in a format with fixed-column fields, which ca

6-16. PRINCIPLES OF OPERATION6.1 CONDUCTIVITYThe 6000UPG utilizes a cell with four pure nickel electrodes for the measurement of solutionconductance.

6-2MEASUREMENT AND CALIBRATION PRECAUTIONS(1) When filling the calibration vessel prior to performing the calibration procedure, make certainthat the

6-3deviation may also be due to fouling of the platinum ORP sensor. This problem can usually becorrected by cleaning the platinum ring according to t

6-46.4 pHThe 6000UPG employs a field replaceable pH electrode for the determination of hydrogen ionconcentration. The probe is a combination electrod

6-5point where plots of pH vs. mv at different temperatures intersect (the isopotential point) must beknown. Using standard pH determination protoco

6-6depth probe. For example, a change of 1 mm of Hg in barometric pressure will change the apparentdepth by approximately 0.045 ft (0.012 m).6.6 TEMP

6-7METHOD OF OPERATIONStandard Clark dissolved oxygen sensors which are marketed by YSI and other manufacturers arecontinuously polarized at a voltage

6-8If this calibration method is employed, place the sonde into this known-value solution and input thevalue (in mg/l) into the 6000UPG software afte

6-9MEASUREMENT AND CALIBRATION PRECAUTIONS(1) If water-saturated air is used as the calibrating medium, make certain that both the DO readingand the

2-12. GETTING STARTEDThis section is designed to quickly familiarize you with the hardware and software components ofthe 6000UPG sonde and its access

6-10The slope, offset, and isopotential point drift slowly, and the probe should be recalibratedperiodically.All ion selective electrodes are subject

6-11MEASUREMENT AND CALIBRATION PRECAUTIONS(1) The temperature response of ion selective electrodes is not as predictable as that of pHsensors. The

6-12per decade for YSI sensors. This slope value is determined by calibration with two solutions ofknown ammonium concentration (typically 1 mg/L and

6-13certain to occur. The extent of the drift will vary depending on the age of the probe, the flow rateat the site, and the quality of the water.

6-146.10 TURBIDITYTurbidity is the measurement of the content of suspended solids (cloudiness) in water and istypically determined by shining a light

6-15readings. Note that YSI offers 100 NTU turbidity calibrant as a standard product (6073) and thatthis standard can be quantitatively diluted with

6-16For unattended sampling applications, selection of 8 at the Number of Samples to Averageprompt results in a somewhat different data processing seq

7-17. MAINTENANCEA Model 6040 Maintenance Kit is available for use with the 6000UPG. The kit includes severalitems which will be helpful or necessary

7-2BATTERY CHAMBERWhen changing batteries, always check the inside ofthe battery chamber to assure that no water has seepedinto the chamber. If the ch

7-3CABLE CONNECTOR PORTThe cable connector port at the top of the sondeshould be covered at all times. While communicatingwith the sonde, the installe

2-26000UPG Sonde to 610 Display/LoggerYou will need...❑ 6000UPG Sonde❑ 610-D Display or❑ 610-DM Display/Logger❑ 6098 MS-8 Adapter for 610YSI 610’s ope

7-47.2 PROBE MAINTENANCEOnce the probes have been properly installed, regular cleaning and oxygen probe membranechanges are required.6029 COND/TEMP &

7-5CAUTION: Be sure to: (1) Use only the sanding disks provided in the 6035 maintenance kit in theresurfacing operation and (2) Sand in a direction pa

7-6DEPTH SENSORSThe depth sensors are factory installed options whichare located inside the sonde body. There is a smallplastic fitting which protec

7-76026 TURBIDITY PROBEThe 6000UPG turbidity probe requires onlyminimal maintenance. After each deployment,the optical surface on the tip of the turbi

8-18. TROUBLESHOOTINGThe following tables should be helpful in identifying the cause of the most common difficultieswhich may occur while operating t

8-2COMMUNICATION PROBLEMSSYMPTOM POSSIBLE CAUSE ACTION REFCan not communicatewith sondeComm port not properly selected Change comm port 5.5Cable conne

8-3SENSOR PERFORMANCE PROBLEMS continued...SYMPTOM POSSIBLE CAUSE ACTION REFpH, ORP, Ammonium,or Nitrate unstable orinaccurate. Errormessages appear

8-4SENSOR PERFORMANCE PROBLEMS continued...“High DO Charge”message during DO calDO sensor needs reconditioned Recondition sensor. Use 6035 Kit 7.2Tubi

8-5SOFTWARE PROBLEMSSYMPTOMS POSSIBLE CAUSE ACTIONS REFUnable to setup a sensoror setup date and timeThe sonde is in unattendedsample modeCancel unatt

9-19. COMMUNICATIONThis section describes the communications protocol that the 6000UPG uses to communicate with thehost system. Section 1 gives a b

2-36000UPG Sonde to Data Collection PlatformYou will need...❑ 6000UPG Sonde❑ 6096 Adapter with Leads❑ Data Collection Platform6096 MS-8 Adapter with

9-29.3 SDI-12 INTERFACESDI-12 is an industry standard serial digital interface bus. The bus was designed to allowcompatibility between data collecti

9-3Master: aM! Initiate a measurement.6000UPG: atttn[CR][LF]ttt - Maximum time in seconds the 6000UPG will take to complete the measurement.n - Numbe

9-4m - 6 character model number. This field always contains "EM6000" (Environmental MonitoringSystem 6000UPG).v - 3 character version numbe

9-5(ISE1), ORP (ISE2), and Depth (in this order). The DO warm-up time is set to 40 seconds.Finally, the 6000UPG SDI-12 address is set to 1.Master:

9-66000UPG: 1+071592+101500+17.5+12.05+98.7[CR][LF]Master: 1D1!6000UPG: 1+8.25+6.45-325+10[CR][LF]After finishing the measurement, the 6000UPG sent a

9-7SDI12This command activates SDI-12 mode. This is the only mode that the 6000UPG will respond to anySDI-12 command. To exit to command line, hit a

9-89.6 FILE FORMATSThe 6000UPG supports three file formats: PC6000, comma and " " delimited (CDF), and ASCII text.The PC6000 format file i

9-99.7 MODEM SETUP6000UPG instruments designated UPG3 on the serial label are wired to support a direct modeminterface via the YSI 6105 MS-8 to DB-25

9-10This option identifies the string necessary for the modem to take the phone off-hook (answer). Fornearly every modem, this string is “ATA” and wi

A-1APPENDIX AHEALTH AND SAFETYINGREDIENTS:• Iodine• Potassium Chloride• WaterWARNING: INHALATION MAY BE FATAL.CAUTION: AVOID INHALATION, SKIN CONT

2-4Upload Data from 6000UPG Sonde to 610-DM YSI 610’s operate on rechargeable batteries.Each 610 comes with a 110 VAC Wall So

A-2pH 4 INGREDIENTS:• Potassium Hydrogen Phthalate• Formaldehyde• WaterpH 7 INGREDIENTS:• Sodium Phosphate, Dibasic• Potassium Phosphate, Monobas

A-3INGREDIENTS:• Potassium Chloride• Potassium Ferrocyanide Trihydrate• Potassium FerricyanideCAUTION - AVOID INHALATION, SKIN CONTACT, EYE CONTACT

A-4INGREDIENTS:• Ammonium Chloride• Lithium Acetate Dihydrate• Sodium Azide (trace)• Hydrochloric acidCAUTION - AVOID INHALATION, SKIN CONTACT, EY

A-5INGREDIENTSPotassium NitrateMagnesium SulfateGentamycin Sulfate (Trace)CAUTION - AVOID INHALATION, SKIN CONTACT, EYE CONTACT OR INGESTION.May be ha

A-6INGREDIENTSStyrene divinylbenzene copolymer spheresThe material is not volatile and has no known ill effects on skin, eyes, or on ingestion. There

B-1APPENDIX BREQUIRED NOTICEThe Federal Communications Commission defines this product as a computing device and requiresthe following notice.This equ

C-1APPENDIX CWARRANTY AND SERVICE INFORMATIONThe 6000UPG sonde is warranted for two years against defects in workmanship and materials whenused for it

D-1APPENDIX DACCESSORIES AND REAGENTSThe following components come standard with the purchase of any6000UPG Environmental Monitoring System.• 6000UPG

D-2Other Optional Accessories• 6027 Turbidity Wiper• 6035 Probe Reconditioning Kit for 6030 Probe• 6036 Carrying case• 6037 12 VDC power supply wi

D-3• SP6093-L Special length field cables available in 25 ft (7.6 m) increments; Maximum 1000 ft(305 m)• 6098B Field Cable to 610-D/610-DM adapter•

2-52.3 SONDE SETUPIn the following section, you will be provided with step-by-step instructions on how to get your6000UPG up and running. We recomme

D-4ORP Reagents• 3682 Zobell Solution (125 ml)Ammonium Reagents• 3841 1 mg/L ammonium-nitrogen standard solution• 3842 10 mg/L ammonium-nitrogen st

D-5 • 617 Replacement Battery Pack for 610• 6099: 610 to Female DB-9 (PC serial) • 6097 Blank port plug for 610• 6104 Replacement Charger Jack for

E-1APPENDIX EAPPLICATION NOTESENSOR DRIFT COMPENSATION WITH THE 6000UPGThe following application note is designed to facilitate the use of the sensor

E-2Compensation Procedure(1) For this example, make certain that the data file is present in a subdirectory of the hard drive(C:\PC6000).(2) "Exi

E-3(6) After writing the DO and pH compensation files to the C:\PC6000 directory, type "PC6000" atthe "C:\PC6000" prompt to re-ent

F-1APPENDIX FSOLUBILITY AND PRESSURE/ALTITUDE TABLESTable 1: Solubility of Oxygen in mg/l in Water Exposed to Water-Saturated Air at 760 mm Hg Pressur

F-2TempoCChlorinity:0Salinity:05.0 ppt9.0 ppt10.0 ppt18.1 ppt15.0 ppt27.1 ppt20.0 ppt36.1 ppt25.0 ppt45.2 ppt20.0 9.09 8.62 8.17 7.75 7.35 6.9621.0 8.

F-3Table 2: Calibration Values for Various Atmospheric Pressures andAltitudes PRESSURE

F-4Table 3. Conversion FactorsTO CONVERT FROM TO EQUATIONFeet Meters Multiply by 0.3048Meters Feet Multiply by 3.2808399Degrees Celsius Degrees Fahren

G-1APPENDIX GSENSOR AND SONDE STORAGE RECOMMENDATIONSThe multiparameter equipment associated with the EMS product line from YSI consists of anumber of

2-63. Follow the procedure described below to install anew membrane on the dissolved oxygen sensor tip.A. Hold the probe in a vertical position and ap

G-2The key for interim storage is to use a minimal amount of water so that the air in chamber remainsat 100 percent humidity, but the water level is l

G-3dissolved oxygen, pH reference, and pH glass) in the bulkhead. Remove the reference module,store it as described below, and plug the open port wi

G-4DISSOLVED OXYGENRapid Pulse dissolved oxygen sensors should always be stored with a membrane and electrolyte inplace and in such a way that the dry

G-5a level which completely covers the dissolved oxygen and pH probes. Seal the vessel with thecap and O-ring. At the end of the storage time, remove

G-6ORPLong Term Storage: ORP is not available on the Model 600. For the Model 6000UPG, 600XL,and 6820 systems, the recommended long term storage prot

H-1APPENDIX HTURBIDITY MEASUREMENTS WITH THE 6000UPGA QUESTION/ANSWER GUIDE TO HELP YOU OPTIMIZE PERFORMANCEAND TROUBLE SHOOT PROBLEMS.IntroductionThe

H-2significant benefit and more than likely will be necessary for most deployments. Even if foulingfrom chemical or biological sources is not a sign

H-3Question 4: Should I carry out a 1-point, 2-point, or 3-point turbidity calibration, andwhat values should I use?Even though the default calibratio

H-4Samples to Average” be set to 8. We feel that this setting will normally produce data which isreflective of the “average” turbidity of field sites

H-5or negative) if the probe is responding correctly from an optical standpoint. If no response isnoted, the probe must be returned to YSI Customer S

2-75. Locate the plug which seals the DO.C.T. port on thesonde. Using the hex driver to assist you, remove theplug.6. Install the 6030 probe into the

F-1APPENDIX ISYSTEM ERRORS AND WARNINGSWARNING: Low RTC battery Lithium battery that powers the real time clock is low.Replace lithium battery.ERROR(0

F-2Error Table continued...ERROR: Need 2 at same conc A 3 point ammonium or nitrate calibration requires that twoof the three calibration solutions be

Item 062819 Drawing A62819 Rev E (4/97)

2-8STEP 2. INSTALL OTHER PROBESIf you have purchased any optional YSI probes, follow instructions provided below for all itemsother than the 6029 con

2-93. Using the hex driver (supplied in the YSI 6040 MaintenanceKit), remove the probe guard mounting screws from the sonde.Set the probe guard and mo

TABLE OF CONTENTS PageSECTION 1

2-10Follow these instructions to prepare your new probe and install it in the Model 6000UPG.NOTE: Instructions for preparation of use, maintenance an

2-115. Install the 6083 or 6084 probe into the sonde as describedbelow.A. Apply a very thin coat of O-ring lubricant (supplied in theYSI 6040 Mainte

2-12fully meshed. Use the hex driver to assist you in tightening the nut.DO NOT OVER TIGHTEN.After all probes have been installed, replace the probegu

2-13STEP 3. INSTALL BATTERIESNOTE: Some 6000UPGs are not configured with internal battery capability. If the 6000UPG youhave purchased is configured

2-14STEP 4. ATTACH CABLERemove the waterproof cap from thesonde connector and set it aside for laterreassembly. Connect a PC interface cableto the s

2-15STEP 6. REVIEW SONDE/COMPUTER INTERFACEThe system configuration best suitedfor initial setup is shown in thediagram to the right.Below we will des

2-16ECOWATCH FOR WINDOWSIf you have purchased Ecowatch for Windows, install the program from the Program Managermenu of your Windows system. Use this

2-17Use the arrow keys to move the cursor and highlight menu options. Press Enter to select ahighlighted option. Press Esc to cancel an entry. A PC

2-18To start, highlight Setup then press Enter. Check the default setup values.Select this option to enter the number of the Comm port (1 or 2) to wh

2-19Select this option to choose a color scheme for the PC6000 menus. As you move the cursorbetween color schemes, the screen changes to display your

PageSECTION 5 PC6000 SOFTWARE5.1 INTRODUCTION 5-15.2 INSTALLING THE PC6000 SOFTWARE 5-15.3 THE SONDE MENU 5-35.4 THE FILE MENU 5-35.5 THE SETUP MENU 5

2-20NOTE: If no menu is displayed and a # appears at the top of the computer screen, follow theinstructions on the screen and type MENU and press Ente

2-21You must now enable (or activate) the sensors which have been installed in your 6000UPG sonde.Select 7. -Sensor setupEnter the corresponding numb

2-222. That parameter must be activated in the Report section of the Main Menu.Select 4-Report from the Main sonde menu. The Report Setup menu will b

3-13. BASIC OPERATIONIn the previous Section, you learned how to install probes and set up the PC6000, Ecowatch forWindows, and 6000UPG sonde softwa

3-23.2 CALIBRATION PROCEDURESWARNING: Calibration reagents may be hazardous to your health. Refer to Appendix A forhealth and safety information.A

3-3The number in parentheses is the default value of this parameter and will be used in the calibrationif only Enter is pressed without typing in anot

3-4CONDUCTIVITYNOTE: This procedure calibrates not only conductivity, but also specific conductance, salinity,and total dissolved solids.Place approx

3-5Observe the readings under Specific Conductance or Conductivity and when they show nosignificant change for approximately 30 seconds, press Enter.

3-6DEPTHFollowing the DO calibration, leave the sonde in water-saturated air. Make certain that the sonde isnot submerged in water for the depth cali

3-7AMMONIUM (NH4+) and NITRATE (NO3-) 3-POINTNOTE: The calibration procedures for ammonium and nitrate are similar to pH except for thereagents in th

APPENDIX A HEALTH AND SAFETYAPPENDIX B REQUIRED NOTICEAPPENDIX C WARRANTY AND SERVICE INFORMATIONAPPENDIX D ACCESSORIES AND REAGENTSAPPENDIX E APPLICA

3-8Place 500 mL of the chilled 1 mg/L standard solution in a clean calibration cup. Carefully immersethe probe end of the sonde into the solution.Al

3-9Dry the sonde and probes carefully and then place the sonde in approximately 300 mL of the secondturbidity standard (100 NTU is suggested). Input

3-10Select the different functions in this menu to become familiar with the Discrete sampling mode.Remember to use Esc or 0 to cancel functions or to

3-11Select this option to set up a timer to automatically turn off discrete sampling. If you begin adiscrete sample and forget to turn it off later,

3-123.4 UNATTENDED SAMPLINGThe Unattended Sampling Mode is designed to log readings of all user-defined parameters atintervals you specify. The 6000U

3-13NOTE: The time entry must include not only hours and minutes, but also seconds. For example, ifyou want to start a study at 8 AM, you must enter

3-143.5 RETRIEVING DATA FROM THE 6000UPGAttach the PC cable to the 6000UPG. Connect the other end of the cable to the serial port of yourcomputer.Run

3-15NOTE: If unattended sampling has already stopped automatically because the duration you enteredearlier has expired, press Esc twice to return to t

3-163.6 ANALYZING DATA WITH PC6000Select File from the top-line menu.A box will appear on the screen asking you to enter a filename.You may type a fil

3-17Select this option to view a time-stamped report of the data collected during the study. Press Esc toreturn to the File menu.Select this option t

1-11. INTRODUCTION1.1 DESCRIPTIONThe 6000UPG Environmental Monitoring System is a multiparameter, water quality measurement,and data logging system.

4-14. SONDE MENU The Model 6000UPG functions are accessible through the sonde menu. The sonde menu structuremakes it simple and convenient to select

4-24.1.1. DISCRETE SAMPLESelect 1. Discrete sample from the Run menu. The Run Discrete-sample menu will be displayed.Select this option to start di

4-3Select this option to name the site of the sample if you intend to log data while discrete sampling.Up to 31 characters can be entered. However,

4-4Select this option to begin conditional sampling. Conditional sample is much like Discrete Samplewith regard to setting site description, sample

4-5In this example, the instrument is set up to log samples only if the temperature of the sample isabove 18°C.To alter the switch so that data is log

4-6NOTE: Before a condition can be applied to a parameter, the parameter must be selected forviewing in the Report Setup menu. (See section 4.6). Ho

4-74.1.3. UNATTENDED SAMPLESelect 3. Unattended sample from the Run menu. The following menu will be displayed.NOTE: If the current time and date a

4-8The program will automatically calculate how long batteries will last, and how long it will take forflash disk memory to be filled. This informati

4-9This message will disappear when the unattended sampling is over and you will be able to interactwith the sonde via the menu. You will be then be

4-10you will be able to follow the stabilization of the readings and confirm the calibration when thereadings are stable by pressing Enter as instruct

1-2The RS-232C and SDI-12 interfaces provide maximum versatility for system networking and realtime data collection. Several 6000UPG units are easily

4-11ORP readings. After no changes occur for approximately 30 seconds, press Enter to confirm thecalibration. Then, as instructed, press any key to

4-12Enter. You will be prompted to type in the NH4+ value (in mg/L of NH4-N) of the solution you areusing. Press Enter again, and the screen will di

4-13as instructed, press any key to return to the Calibrate menu. This procedure should only be used toupdate a previous 2-point or 3-point calibrati

4-144.3 FILEIn general, selections from the File menu allow the user to access data which has been stored in thesonde flash disk memory. Select 3. F

4-15Select this option to upload data from the sonde's flash disk memory to a software program otherthan PC6000. Data is uploaded in comma &

4-16Select this option to examine the data in any file currently stored in flash disk memory. Thefollowing prompt will appear.Enter file number to VI

4-17Select this option to verify that the entire flash disk memory system is working properly. As withthe Format Flash Disk command this option also

4-184.5 SYSTEM SETUPSelect 5. System setup from the sonde Main menu to custom configure your system with regard toparameters such as date, time, radi

4-19Select this option to set up communication parameters between the 6000UPG Sonde and an outsidedevice, such as a personal computer. The following

4-204.6 REPORT SETUPSelect 6. Report setup from the sonde Main menu to configure all reports constructed by thesonde. You will be able to design the

1-31.2 GENERAL SPECIFICATIONSSee also Section 1.3 Sensor Specifications.Operating EnvironmentMedium: fresh, sea, or polluted waterTemperature: -5 to

4-21selection. To deactivate a parameter from screen display, simply press the number of the activeparameter, the asterisk will disappear, and the pa

4-22NOTE: You will see reference to TDG (total dissolved gas) in the Sensor setup menu. This isfor possible future upgrade and is not currently avail

4-234.8 DIAGNOSTICSSelect 8. Diagnostics to provide diagnostic data on each installed sensor. The following displaywill appear, depending on the sen

5-15. PC6000 SOFTWARENOTE: If you have purchased Ecowatch for Windows for use with your Model 6000UPG,consult the Help selection in the top menu bar

5-2DOS 3.0 or later. Additional RAM and the presence of a math co-processor will improve theoperation of the program, but are not required.NOTE: PC60

5-35.3 THE SONDE MENUThe Sonde option of the PC6000 software is covered in detail in Section 4 of this manual. Thisoption emulates a VT 100 terminal

5-4+------------------------------------------------------------------------------+¦ Sonde File Setup Real-Time Exit YSI PC6000 ¦¦--------------------

5-5Select this option to add a parameter to a report or plot. A list of all available parameters which canbe added will be displayed. Choose those p

5-6+------------------------------------------------------------------------------+¦ Sonde File Setup Real-Time Exit YSI PC6000 ¦¦--------------------

5-7Select this option to compensate a data file for long term sensor drift. This compensation procedureis also commonly called Post-Calibration.Examp

1-41.3 SENSOR SPECIFICATIONSThe following are typical performance specifications for each sensor.Depth - DeepSensor Type...Stainless steel st

5-8Appendix E of this manual is an application note which will be very helpful as you prepare for datacollection to be used to compensate 6000UPG data

5-9Select this option to assign a title which will appear on all reports and plots.Select these options to view start and stop times of the file, and

5-10An averaged plot (AVG) assumes a correlation between the X-axis parameter and the Y axisparameters. The averaged plot divides the X axis into 100

5-11Select the Scaling Info menu option+------------------------------------------------------------------------------+¦ Sonde File Setup Real-Time Ex

5-12Select these options to provide a quick way to copy from either the default or automatic limitscolumns to the manual scaling column. Once data ha

5-132. VIEW File OptionsAll of the View options allow you to view file data on the screen.+-----------------------------------------------------------

5-14+------------------------------------------------------------------------------+¦ Sonde File Setup Real-Time Exit YSI PC6000 ¦¦-------------------

5-15+------------------------------------------------------------------------------+¦ Sonde File Setup Real-Time Exit YSI PC6000 ¦¦-------------------

5-163. SYSTEM File OptionsSYSTEM menu options allow you to print the report and plot, or export data to some othersoftware program. The specific setu

5-17Select the Print Plot option to send your plot to the printer. After you select this option, a promptwill appear on the screen asking if your pri

1-5SalinitySensor Type...Calculated from conductivity and temperatureRange...0 to 70 pptAccuracy...+/- 1.0%

5-18Select this option to display the name of the current active definition.Select this option to retrieve an old definition.Select this option to cre

5-19Select this option to reset the active definition to default values. Thus all customization featuresyou previously set up are reset to default va

5-205.5 THE SETUP MENUChoosing the Setup option from the menu bar allows you to configure the PC program to yourspecifications. Highlight Setup, fro

5-21Select any of these options to change them from their default. Users may specify any order of day(D), month (M), and year (Y) by selecting Date f

5-22See Section 5.7 for a detailed explanation of this menu. Advanced Setup

5-235.6 DATA CAPTURE / REAL-TIME SETUPOnce the Real-time mode has been properly set up, you will be able to view the data in real-time asit is taken i

5-24you study. While the discrete sample mode is still operative, exit. to the PC6000 menu bar bypressing F10 (do not press Esc or the sampling will

5-25Select this option to display the following menu.+------------------------------------------------------------------------------+¦ Sonde File Setu

5-26YYYYMMDD and a string of the form HH:MM:SS.JUL (Julian):A ten-digit integral number of seconds past midnight March 1, 1984. NUM (numeric):A fixed

5-27To use this feature, select a menu item to be changed from the lists provided. Find the box whichhas the same title as the item you selected. Wa