Soup & Broth Sulfite Test Strips

SKU: 33817-S

$29.25USD or lower Each

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Use Indigo® 10–500 ppm sulfite test strips in your kitchen or production line for fast, affordable sulfite screening of soups, broths & gravies, no lab required.

Soup & broth manufacturers that produce large batches need to verify sulfite levels across each run, quickly, without halting production. Similarly, restaurant chefs & culinary professionals who prepare soups, stocks, or sauces, need to take guest sulfite sensitivities into account. Indigo® 10–500 ppm sulfite test strips ensure fast, affordable spot-checks. No lab, no waiting, no guesswork, done!

We've been selling sulfite test strips since 2007. Buy fully documented Indigo® sulfite test strips,100 strips/vial with a guaranteed 3 year shelf life (dated back from expiration date "yyyy.mm.dd").
Details Specs Docs Reviews
Details

How Test Strips Compare to Sulfite Lab Analysis?

Factor Indigo® Sulfite Test Strips Certified Laboratory Analysis
Result time Under 2 minutes Days to weeks
Cost per test Cents per strip $50 – $200+
Equipment needed None Specialized lab instruments
Detection range 10 – 500 ppm Full quantitative range
Accuracy Semi-quantitative (screening) Quantitative / precise
Best for Routine checks, batch screening Regulatory submissions, audits
Used where Kitchen, production floor Off-site laboratory
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Specifications

Indigo® sulfite test strips indicate the presence of sulfite ion in increments of 10, 50, 100, 250, and 500ppm after 15 seconds.

  • The number of strips (100) vial is approximate.
  • These strips have a guaranteed shelf of 3 years from date of manufacture (indicated by expiration date)
    Vial must be kept tightly sealed & kept at typical room temperatures.
  • Vial has a built in desiccant and strips can, in principle, last much longer.
    For more information, see: Test Strip Expiration Dates; Good Today, Dead Tomorrow?
  • Strips test for: sulfite, bisulfite and metabisulfite
Documentation

A Certificate of Conformance is available on request after shipment.
Indigo® sulfite test strips are made in USA & calibrated with NIST standards.

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?

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