K-9610W Sulfite in Wine

K-9610W Sulfite Titrets Kit was designed to obtain Sulfite levels ranging from 10-100 ppm

Sulfite Information

$12.00

Why Choose CHEMetrics Titrets?

CHEMetrics Titrets self-filing reagent ampoules make it easy to perform quick, accurate titrations of water samples. The handheld titrettor that comes with the kit allows the user to easily and reliably control the flow of the solution being measured without the need to count drops or use burets or other equipment. This unique design allows you to perform a titration anywhere and achieve reliable results for a variety of substances.

Safe and Reliable Results

While traditional methods often require multiple steps and thorough preparation, these test kits allow you to obtain dependable results with a few simple steps. By simplifying the testing method, Tritrets test kits reduce the potential for operator error. Additionally, each of the ampoules contained in the test kits is vacuum sealed which helps eliminate the problem of obtaining inaccurate results from stale or unstable reagents. These reagents are stored right in the tip of each ampoule and sealed in glass, thereby minimizing direct contact with the chemicals.

What's included:

  • 10 Ampoules
  • 10 valve assemblies
  • 1 25 mL Sample Cup
  • Instruction Manual

Method

Sulfite is not usually present in surface waters. If sulfite is discharged in effluents or from domestic wastewaters, it readily oxidizes to form sulfate. Sodium sulfite is the most common form of sulfite and is an excellent reducing agent with applications as an oxygen scavenger. Sulfite concentrations in boiler and process waters must be monitored routinely to avoid overtreatment. Waste treatment plants that use sulfur dioxide to remove excess chlorine must monitor their effluents for sulfite.

Sulfites have been used for centuries to sanitize and preserve foods. They are used worldwide in the wine industry as antioxidant and antimicrobial agents. However, sulfites have been identified as causative agents in certain allergic reactions suffered by asthmatics. As a result, the FDA and the Bureau of Alcohol, Tobacco, and Firearms have mandated that sulfites in foods and beverages, at levels of 10 ppm or higher, be identified on the label.

CHEMetrics’ sulfite test kit is based on the Ripper method, which the wine industry has used for years as a standard for rapid sulfite analysis. Sulfite is titrated with an iodide-iodate solution, using a starch endpoint indicator. Phosphoric acid is used to adjust the pH of the sample.

Results are quantified using direct-reading titration cells. The test determines free sulfite as ppm (mg/L) SO2. Results for this test kit are acceptable for white wines (although they can have an error of up to 10 ppm). This test kit is not recommended for use with red wines or white wines containing ascorbic acid or tannin. These wines often give false high test results.

How to use:

Note: Images used in the following table show a total hardness and colors may differ from the ones shown. Read written instructions to know what color changes to expect from your substance.

1. Collect the sample in any clean container. 2. Push a valve assembly (located in the tray behind the ampoule) onto the titret ampoule tip until it fits snugly. Note: the valve assembly should reach the reference line on the neck of the ampoule.
   
3. Snap the tip of the ampoule at the score mark. 4. With the tip of the valve assembly immersed in sample, squeeze the be valve briefly to add a small amount of sample to the Triet. The contents will turn deep blue. Wait 30 seconds.
   
5. Squeeze the bead valve again to draw in another small amount of sample. 6. Rock the Titret to mix the contents.
   
7. Repeat steps 5 and 6 until the liquid in the Titret permanently turns from blue to colorless 8. When the color of the liquid in the ampoule changes to colorless, the endpoint has been reached. Hold the titret tip pointed upward and read the scale opposite the liquid level to obtain a test result in ppm (mg/L) free SO2. 
   

 

More CHEMetrics Kits for Sulfite

Titrets
Product Number Method MDS Range Price
K6902 Iodometric 2.0 ppm 2-20 ppm as SO3 $33.00
K9605 Iodometric 5.0 ppm 5-50 ppm as SO3 $33.00
K9610 Iodometric 10 ppm 10-100 ppm as SO3 $33.00

K9650

Iodometric 50 ppm 50-500 ppm as SO3 $36.00

K9610W

Ripper (Sulfite in Wine) 10 ppm 10-100 ppm as SO2 $12.00

 

Downloads:

K-9610W Instructions

Sulfite Information

More Information
Manufacturer CHEMetrics
Call For Price No
Gas Sulfite (SO3)
4-20 mA Output No
Voltage Output None
Power Requirements 4 AAA Batteries
Datalogging No
Warranty 1 Year
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