Sulfite Test Strips 100/Vial

SKU: 33817-S

$26.25USD or lower Each

Save More When You Buy More!
Quantity1+2+ 3+ 10+ 
Price for each$26.25USD$24.95USD$23.95USD$23.67USD
Your savings - 4.95%8.76%9.83%
Qty:
[5]   2 Reviews    | Write a Review

Indigo® test strips detect sulfite from 10 to 500ppm, only $26.25 per 100 strips. Concerned about allergies? These strips also detect & accurately report bisulfite and meta-bisulfite.

Sulfites have been used for centuries to prevent spoilage in foods as diverse as dried fruits, canned vegetables, condiments, frozen shrimp, potato chips, jams, and wine. They also prevent discoloration  seen in peeled potatoes and apples.

See below for information on testing sulfites in Red Wine and White Wine. The same strip testings for both but red wine's color interferes with the measurement. See below for instructions.

Details Specs Reviews Related Products
Details

Various heath organizations have set 10ppm as the lower limit for people with asthma & other health concerns. If the test strip does not change color, you can assume that the sulfite level is low enough to be considered safe for consumption. Read more in our blog on what the 10ppm level really means.

You can test dried fruits or potatoes for sulfite easily. Simply wet the suflite test strip pad with water (distilled or deionized ideally) & press against the food item. If free sulfite is present above 10ppm, the pad will change color.

The presence of sulfites may be listed on food labels as: sulfur dioxide, potassium bisulfite, potassium metabisulfite, sodium bisulfite, sodium metabisulfite, or sodium sulfite.

For those interested in the chemistry of how these strips work, please refer to this pdf which explains the theory of how free sulfite is detected.

Related information or images
Cider Sulphite Preservative Test Strips

Cider Preservative
Dried Fruit

Dried Fruit
Potatoes

Potatoes
Red Wine Sulfite Test

Red Wine
White Wine Sulfite Test

White Wine
Seafood

Seafood
Specifications
This Indigo® test strip indicates the presence of sulfite ion in increments of 10, 50, 100, 250, and 500ppm after 15 seconds.

Test Strip Documentation
Stability Statement Certificate of Analysis SDS
Indigo Sulfite Test Strips 0-500ppm Stability Statement Indigo Sulfite Test Strips 0-500ppm Certificate of Analysis Indigo Sulfite Test Strips 0-500ppm SDS

 

Reviews (2)
2023-10-27

Test strips worked as described, including the red wine citric acid method. I first did some comparisons using sulfites in water. Dipping the strips and the citric acid method gave the same result, albeit a little lower than expected. Solution was mixed to 100 ppm and both strips showed about 75. Used a similar technique on red wine, although dipping does not work. Wine with no sulfites showed zero. Added and got similar readings to the water results. Thanks for the great product and the citric acid trick.

2021-01-22

Great place for a hard to find product. Excellent price! Quick shipping.

— Quality Control
— Indigo:

Thanks for letting us know. This might interest you since you are in quality control: Can 10ppm of Sulfite & Quat Really Mean Zero?

Review This Product Now!


For each Related Product, enter the quantity you would like to order and click the Add to Cart button beside the item.

Filter paper, 7cm diameter, 100 sheets/pack
Filter paper, 7cm diameter, 100 sheets/pack
Sku: 33735-7
$5.95USD or lower