Milwaukee MI455US PRO Mini Titrator for Sulfur Dioxide in Wine

Lab Grade. Accurate. Simple. Automated.

The Milwaukee MI455US PRO SO₂ Mini-Titrator is preferred by wine makers seeking results faster with lower costs and simple operation. The MI455US uses a piston-driven pump for accurate dynamic dosing, a built-in magnetic stirrer for a faster reaction and lab grade platinum-ringed ORP electrode. Using a modified Ripper method, this mini-titrator does not rely on color change but uses potentiometric detection. The MI455US automatically dispenses the titrant, determines the endpoint, and completes the calculations in a fraction of the time needed for a manual titration. The MI455US uses a preprogrammed method and specialized ORP electrode combined with an algorithm to determine the end of the titration reaction.

Summary

The Milwaukee MI455 PRO SO₂ Mini-Titrator is preferred by wine makers seeking results faster with lower costs and simple operation.

The Milwaukee PRO SO₂  PRO Mini-Titrator offers:

The MI455 PRO Mini-Titrator 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.

Simplicity

The MI455 PRO Mini-Titrator is designed to for simple one button operation with pre-standardized titrant and pre-measured reagents for easy set up.

Design features

• Measure both free and total SO₂
• Easy measurement: just measure the wine sample, add the reagents as directed, prepare ORP probe and pump, add the stabilizer and start titration by pressing the start button
• Refillable, double junction lab grade ORP electrode
• 700 rpm built-in stirrer
• Simple and reliable peristaltic pump that ensure high dosing repeatability
• Compact 8.2 x 8.4” footprint
• Built-in algorithm to analyze the shape of the electrode response and to determine the reaction completion that automatically completes the analysis, makes all necessary calculations and assures a user friendly interface

Storage

To minimize clogging the ORP probe needs to be kept hydrated. Long periods of dry storage will damage the sensitivity of the probe. Allowing the probe to dry out may also result in the junction hole getting clogged.

Storing in ORP probe storage solution MA9015 will help address both these issues. Do not store in tap water or DI water. This will damage the sensitivity of the probe.

Cleaning an Maintenance

Residue from the sample can impact the sensitivity of the sensing bulb and clog the junction. This is especially true if the sample has a lot of organic material. We recommend regularly soaking your electrode in cleaning solution MA9016. Also:

1.  Inspect the electotrode for damage or scratches, if present replace the electrode.

2.  Inspect the cable.  The connection cable and insulation must be intact.

3.  Connectors should be clean and dry.

4.  Rinse off salt deposits with water or DI water.

Specifications

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: 700 rpm

Environment: 0 to 50 °C (32 to 122 °F) ; max 95% RH non-condensing

Power supply: 115V/60Hz; 10VA

Dimensions: 8.2 x 8.4 x 6.4 inches (with beaker)

Weight: 77.6 ounce

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