Milwaukee MI455 PRO Mini Titrator

SKU: 9139-MI455 PRO~ea

Milwaukee MI455 PRO Mini Titrator

SKU: 9139-MI455 PRO~ea
Regular price $957.11 CAD
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Milwaukee MI455 PRO Mini Titrator for Sulphur Dioxide in Wine

The Milwaukee MI455 PRO Mini-Titrator makes the measurement of free and total Sulphur Dioxide simple. It can be used to test for free and total SO2 in all wines. Using a modified Ripper method, it doesn’t rely on colour change but instead uses potentiometric detection.

The MI455 automatically dispenses the titrant, determines the endpoint, and completes the calculations in a fraction of the time needed for a manual titration. It uses a pre-programmed method and specialized ORP electrode, combined with an algorithm, to determine the end of the titration reaction.

It is accurate to 5% of the reading with a resolution of 1 ppm with a range of 0-400 ppm. The titrator uses piston-driven pump for accurate dynamic dosing, a built-in magnetic stirrer for a faster reaction, and lab grade platinum-ringed ORP electrode.  It is designed to for simple one button operation with pre-standardized titrant and pre-measured reagents for easy set up.


  • Fast, easy-to-read results 
  • Accuracy to ±5% of reading
  • Easy measurement: just measure the wine sample, add the reagents as directed, prepare ORP probe and pump, add the stabilizer and start the titration by pressing the start button
  • Refillable, double junction lab grade ORP electrode with a screw on cap to ensure proper storage
  • Compact design with a footprint of 8.2 x 8.4 inches
  • Built-in stirrer is automatically maintained at a speed of 1500 rpm
  • Built-in algorithm to analyze the shape of the electrode response and to determine the reaction completion that automatically completes the analysis; makes all the necessary calculations and ensures a simple and effective interface for the user
  • Simple and reliable peristaltic pump that provides high dosing repeatability as well as the ability to calibrate with the provided Milwaukee standards
  • Ability to easily measure both free and total SO2


  • Range: 0 to 400 ppm SO2
  • 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 pressure: 0.5 mL/min
  • Stirring speed: 1500 rpm
  • Environment: 0 to 50 °C (32 to 122 °F) ; max 95% RH non-condensing
  • Power supply: 220V/50Hz; 10VA
  • Dimensions: 8.2 x 8.4 x 6.4 inches (with beaker)
  • Weight: 77.6 ounce

Milwaukee MI455 Manual

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