Milwaukee - Mi455 mini-titrators for the determination of free&total sulphur dioxide

Mi455 mini-titrators for the determination of free&total sulphur dioxide

Instruction Manual

Mi455 Mini-titrator for the determination of FREE & TOTAL SULPHUR DIOXIDE in wine analysis

Mi455 is a user-friendly microprocessor-based mini-titrator for the determination of free and total sulphur dioxide in the process of wine making. This mini-titrator will give you direct readings with a range of 0 to 400 ppm.
The instrument comes with a pre-programmed analysis method for free and total sulphur dioxide measurements on wine sample.

Technically, sulphite is a salt or ester of sulfurous acid, but more commonly, sulfur dioxide (SO2). Sulfite is the most effective and widely used preservative in winemaking. It preserves by safeguarding musts and wines against premature oxidation and microscopic life forms that could otherwise spoil wine. It preserves a wine’s freshness, helps maintain its color, and is essential for aging wines beyond their first year without deterioration. It also inhibits wild yeasts, thereby allowing cultured wine yeasts to dominate the fermentation. Sulfites may be "bound" or "free." Bound SO2 combines with aldehyde compounds, those most responsible for oxidation in wines.

Free SO2 results from the dissipation of active SO2 and is the only SO2 that provides antiseptic and oxidative protection to wines. The most efficient what to add free SO2 to a must, juice or wine is by adding dissolved potassium metabisulfite to it. The effectiveness of free SO2 is dependent on the pH of the media to which it is added.

Solutions and Reagents included
Calibration standard SO2, Titrant SO2, Alkaline reagent for total SO2, Acid reagent for total SO2, Acid reagent for free SO2, Stabilizer SO2, Refilling Electolyte Solution 3.5M KCl for ORP electrodes.

Easy Steps
Prepare the sample to be measured with wine and reagent, push the start button and note the reading.

SPECIFICATIONS
Range	0 to 400 ppm of SO2
Resolution	1 ppm
Accuracy	5% of reading
Method	ripper titrimetric method
Principle	equivelance 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; max RH 95%
Power Supply	220V/50 Hz; 10VA
Dimensions	208 x 214 x 163 mm
Weight	2.2 Kg

ACCESSORIES
Mi555-001	Calibration standard, SO2 (500 mL bottle)
Mi555-002	Titrant SO2 (100 mL bottle)
Mi555-003	Alkaline reagent for total SO2, (4 x 100 mL bottle)
Mi555-004	Acid reagent for total SO2, (4 x 100 mL bottle)
Mi555-005	Acid reagent for free SO2, (4 x 100 mL bottle)
Mi555-006	Stabilizer, SO2, (40 pp)
MA924B/1	ORP Electrode
MA9011	Refilling Electrolyte Solution 3.5M KCl, for ORP electrodes, 230 mL bottle
Mi0009	Small stir bars (5 pcs)
Mi0020	50 mL beaker (4 pcs)
Mi0021	25 mL beaker (4 pcs)

ORDERING INFORMATION
Mi455 is supplied complete with: Calibration standard SO2, Titrant SO2, Alkaline reagent for total SO2, Acid reagent for total SO2, Acid reagent for free SO2, Stabilizer, SO2, MA924B/1 ORP electrode, small stir bar, 2 x 50 mL beakers, 2 x 25 mL beakers, Refilling Electolyte Solution 3.5M KCl for ORP electrodes 230 mL bottle, test tube set, O-ring, 1 mL syringe, power cable and instruction manual.

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<td height="27" valign="top" bgcolor="#FFFFFF"><div align="right"><a href="/site/db/doc/manMi456_ENG.pdf" target="www.milwaukeeinst.com"><img src="/site/db/imgsite/pdf.jpg" alt="Instruction Manual" width="14" height="15" border="0"></a></div>
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<td valign="top" bgcolor="#FFFFFF"><div align="left">Instruction Manual</div></td>
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<td colspan="3" valign="top" bgcolor="#FFFFFF">Mi456
Mini-titrator for the determination of TITRATABLE TOTAL ACIDITY for wine analysis
 Mi456 is a user-friendly microprocessor-based mini-titrator for the determination of the titratable total acidity in the process of wine making. This minititrator gives you direct readings in g/L of tartaric acid, with a range of 0.0 to 25.0 g/L.
The instrument comes with a pre-programmed analysis method for the titratable total acidity measurements on wine sample. Also called TA and sometimes total acidity, titratable acidity is the sum of the fixed and volatile acids present in a wine. This is determined by a chemical process called titration. The titratable acidity is usually expressed in terms of tartaric acid, even though the other acids are also measured. Titratable acidity is expressed either as a percentage or as grams per liter. For example, 0.7% TA is the same as 7 grams per liter (or 7 g/l) TA.
Acidity in the must will result in a poor fermentation and a slightly medicinal and flat taste. Too much acid will give the wine an unpleasant sourness or tartness. Some acid is necessary for fermentation, and up to one-fourth of the initial acid content will be consumed by the yeast during fermentation. Low-acid musts are usually corrected by adding tartaric acid (the principle acid in grapes), malic acid, citric acid, or acid blend. An acid testing kit is indispensable in measuring initial acidity.</td>
<td width="35%" colspan="4" valign="top" bgcolor="#FFFFFF"><img src="/site/db/img/Mi456_big.jpg" alt="Mi456" width="300" height="300"></td>
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<td valign="top"><div align="justify">Solutions and Reagents included 
Calibration standard TA, Titrant TA, Buffer pH 7.0, Buffer pH 8.2, MA9011 Refilling Electolyte Solution 3.5M KCl, for pH electrodes</div></td>
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<td valign="top"><div align="justify">Glass electrode & Temp Probe 
pH electrodes and Temperature Probe are supplied with the Mi456</div></td>
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<td colspan="2" bgcolor="#003399">SPECIFICATIONS</td>
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<td width="37%">Range</td>
<td width="63%">0.0 to 25.0 g/L of tartaric acid</td>
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<td>Resolution</td>
<td width="63%"> 0.1 g/L</td>
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<td>Accuracy</td>
<td width="63%"> 5% of reading</td>
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<td>Method</td>
<td width="63%">
acid-base titration method</td>
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<td>Principle</td>
<td width="63%">
end-point titration</td>
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<td>pH calibration</td>
<td width="63%">
1 point in selected end-point: 7.00 pH or 8.20 pH</td>
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<td>Sample Volume</td>
<td width="63%">
2 mL</td>
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<td>Temperature Compensation </td>
<td width="63%">
Automatic from 0.0 to 100.0°C</td>
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<td>pH electrode </td>
<td width="63%">MA919B/1 (included)</td>
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<td>Temperature Probe</td>
<td width="63%"> MA831R (included)</td>
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<td>Pump debit </td>
<td width="63%">
0.5 mL/min</td>
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<td>Stirring Speed</td>
<td width="63%"> 1500 rpm</td>
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<td>Environment</td>
<td> 0 to 50°C; max RH 95%</td>
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<td>Power Supply </td>
<td> 220V/50 Hz; 10VA</td>
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<td>Dimensions</td>
<td>208 x 214 x 163
mm</td>
</tr>
<tr bgcolor="#E6E6E6">
<td>Weight
</td>
<td width="63%">2.2
Kg</td>
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<td colspan="2">ACCESSORIES</td>
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<td width="20%">Mi556-001
</td>
<td width="80%">Calibration standard TA (100 mL bottle)</td>
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<td>Mi556-002
</td>
<td>Titrant TA (100 mL bottle)</td>
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<td>Mi556-003
</td>
<td>Buffer pH 7.0 (100 mL bottle)</td>
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<td>Mi556-004
</td>
<td>Buffer pH 8.2 (100 mL bottle)</td>
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<td>MA919B/1
</td>
<td>pH Electrode</td>
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<td>MA831R
</td>
<td>Temperature probe</td>
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<td>MA9011
</td>
<td>Refilling Electolyte Solution 3.5M KCl, 
for ORP electrodes, 230 mL bottle</td>
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<td>Mi0009
</td>
<td> Small stir bars (5 pcs)</td>
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<td>Mi0020</td>
<td> 50 mL beaker (4 pcs) 
</td>
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<td>Mi0022</td>
<td> 2000 µL pipette (1 pc)</td>
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<td>Mi0023</td>
<td> Pipette tips for 2000 µL pipette (4 pcs)</td>
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<td height="21" colspan="2"> </td>
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<td colspan="2">ORDERING INFORMATION</td>
</tr>
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<td height="36" colspan="2"><div align="justify">Mi456 is supplied complete with: 
Calibration standard TA, Titrant TA, Buffer pH 7.0, Buffer pH 8.2, MA919B/1 pH Electrode, MA831R Temperature probe, MA9011 Refilling Electolyte Solution 3.5M KCl, for pH electrodes 230 mL bottle, small stir bar, 2 x 50 mL beakers, 2000 µL pipette, test tube set, O-ring, 1 mL syringe, power cable and instruction manual.</div></td>
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Mi455 mini-titrators for the determination of free&total sulphur dioxide