Milwaukee Mi455 Instruction Manual
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Milwaukee Mi455 Instruction Manual

Wine lab minititrator
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INSTRUCTION MANUAL
Milwaukee W
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Milwaukee W
Mi455
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ab Minititrator
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Summary of Contents for Milwaukee Mi455

  • Page 1 Milwaukee W ine L ine L ab Minititrator ab Minititrator Milwaukee W Milwaukee W Milwaukee W ine L ine L ine L ab Minititrator ab Minititrator ab Minititrator Mi455 F F F F F ree & T ree & T ree &...

  • Page 2: Table Of Contents

    Instruction Manual Mi455 FREE & TOTAL SULPHUR DIOXIDE Minititrator for wine analysis TABLE OF CONTENTS FUNCTIONAL DESCRIPTION ................3 GENERAL DESCRIPTION ..................4 PRINCIPLE OF OPERATION .................. 6 SPECIFICATIONS ....................7 STARTUP ......................8 GUIDE TO DISPLAY CODES ................. 9 GENERAL TIPS FOR AN ACCURATE MEASUREMENT ..........

  • Page 3: Functional Description

    www.milwaukeetesters.com FUNCTIONAL DESCRIPTION DISPLAY A. HOURGLASS ICON B. BATTERY STATUS ICON C. ERROR MESSAGE D. MEASURE STATUS CALIBRATION MODE INDICATOR MAIN DISPLAY G. MEASUREMENT UNIT H. TIMER MODE INDICATOR SECONDARY DISPLAY FRONT PANEL A. TITRANT BOTTLE B. LIQUID CRYSTAL DISPLAY (LCD) C.

  • Page 4: General Description

    GENERAL DESCRIPTION The Mi455 is a low-cost, easy to use, microprocessor-based automatic titrator. It has a simple and reliable peristaltic pump that ensure high dosing repeatability. By performing pump calibration with the provided Milwaukee standards, the instrument accuracy is assured.
  • Page 5 This is also the level which is needed for maximum protection of your wine. This is particularly true in the case of sweet, and most notably, botrytised wines. The Milwaukee Mi455 offers the possibility to test free or total SO in all the wines including the red ones, that are difficult to test with manual methods because the color changes are hardly seen.

  • Page 6: Principle Of Operation

    Instruction Manual Mi455 FREE & TOTAL SULPHUR DIOXIDE Minititrator for wine analysis PRINCIPLE OF OPERATION Determination of sulphur dioxide in wine samples is made by titration of the sulphur dioxide present in wine with iodate. In this procedure an excess of iodine is added to the wine sample and it is titrated with iodate.

  • Page 7: Specifications

    www.milwaukeetesters.com SPECIFICATIONS Range 0 to 400 ppm SO Resolution 1 ppm Accuracy 5% of reading Method Ripper titrimetric method Principle Equivalence point redox titration Sample volume 50 mL ORP Electrode MA924B/1 (included) Pump debit 0.5 mL/min Stirring speed 1500 rpm Environment 0 to 50 °C (32 to 122 °F) ;...

  • Page 8: Startup

    Instruction Manual Mi455 FREE & TOTAL SULPHUR DIOXIDE Minititrator for wine analysis STARTUP • Place the instrument on a flat table. Do not place the instrument on direct sun light. • Connect the titrator to mains socket with ground connection and the correct voltage and frequency.

  • Page 9: Guide To Display Codes

    www.milwaukeetesters.com PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION PROBE FUNCTIONAL DESCRIPTION GUIDE TO DISPLAY CODES This screen appears for a few seconds each time the instrument is turned ON. Main screen display. Main screen display with stirrer active. Purging mode message.
  • Page 10 Instruction Manual Mi455 FREE & TOTAL SULPHUR DIOXIDE Minititrator for wine analysis This error message appears when the sample concentration exceeds 400 ppm. The used standard solution is wrong. This error message appears when the input readings (mV) exceed the input limits (0y1000mV).

  • Page 11: General Tips For An Accurate Measurement

    www.milwaukeetesters.com GENERAL TIPS FOR AN ACCURATE MEASUREMENT The instructions listed below should be carefully followed during testing to ensure best accuracy. • Purge the peristaltic pump to have fresh titrant when starting a new analysis or calibration. • Calibrate the peristaltic pump before performing an analysis. •...
  • Page 12 Instruction Manual Mi455 FREE & TOTAL SULPHUR DIOXIDE Minititrator for wine analysis • Open refill cap on the ORP electrode and immerse the electrode approximately 2 cm (0.8”) into the sample to be tested. Do not touch stir bar with the tip of the electrode.

  • Page 13: Free So Measurement Procedure

    www.milwaukeetesters.com FREE SO MEASUREMENT PROCEDURE • Using a clean pipette, fill the 50 mL beaker up to 50 mL mark with the wine sample. Note: It is important to be accurate in your measurements of Wine sample. Pipettes are recommended. •...

  • Page 14: Total So Measurement Procedure

    Instruction Manual Mi455 FREE & TOTAL SULPHUR DIOXIDE Minititrator for wine analysis • Press START STOP in order to start titration. The display will show “----” during titration, along with stirrer and pump tags blinking on the LCD. • At the end of the titration, the Sulphur Dioxide concentration is displayed in mg/L (ppm).

  • Page 15: Pump Tube Replacement

    www.milwaukeetesters.com • Insert dosing tip into holder. Ensure there is titrant in the dosing tip. If not, hold the dosing tip over an empty container and press PUMP for a few seconds until the titrant is in the dosing tip. The tip should be below the pump to ensure gravity flow and minimize the chance of air bubbles in the tube.

  • Page 16: Fuse Replacement

    Instruction Manual Mi455 FREE & TOTAL SULPHUR DIOXIDE Minititrator for wine analysis FUSE REPLACEMENT To change the fuse follow next steps: • Disconnect the power cord from the rear panel of the instrument. • Pull out the fuse holder located near the power cord connector.
  • Page 17 1 hour. Follow the Storage Procedure above. CLEANING PROCEDURE • Wine deposits Soak in Milwaukee MA9016 cleaning solution for 1 hour • Wine stains Soak in Milwaukee MA9016 cleaning solution for 1 hour IMPORTANT: After performing any of the cleaning procedures, rinse the electrode thor- oughly with distilled water, refill the reference chamber with fresh electrolyte and soak the electrode in MA9015 Storage Solution for at least 1 hour before taking measurements.

  • Page 18: Accessories

    Instruction Manual Mi455 FREE & TOTAL SULPHUR DIOXIDE Minititrator for wine analysis ACCESSORIES REAGENT SETS MA9011 Electrode filling solution (230 mL) MA9015 Electrode storage solution (220 mL) MA9016 Cleaning solution (220 mL) Mi555-001 Calibration standard (500 mL) Mi555-002 Titrant solution (100 mL)
  • Page 19 Damage due to accidents, misuse, tampering or lack of prescribed maintenance is not covered by the warranty. Milwaukee/Martini instruments reserves the right to make improvements in design, construction and appearance of its products without advance notice.
  • Page 20 THANK YOU FOR CHOOSING Sales and Technical Service Contacts: Milwaukee Electronics Kft. Alsókikötő sor 11. 6726, Szeged, Hungary Tel: +36-62-428-050 Fax: +36-62-428-051 e-mail: sales@milwaukeeinst.com Milwaukee Instruments, Inc. 2950 Business Park Drive Rocky Mount, NC 27804 USA Tel: +1 252 443 3630 Fax: +1 252 443 1937 e-mail: sales@milwaukeetesters.com...

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