1.16987 Supelco

Sulfite Test

reflectometric, 10-200 mg/L (SO32-), for use with REFLECTOQUANT®



Quality Level   100
measuring range   10-200 mg/L (SO32-)
compatibility   for use with REFLECTOQUANT®
detection method   reflectometric
storage conditions   Store at +2°C to +8°C.


General description

Method: reflectometric with test strips 10 - 200 mg/l SO₃²⁻ Reflectoquant®

The Reflectoquant Sulfite test strips are suitable for food analysis, particularly in the testing of wine and fruit juices, sulfurated foods (e.g. fresh and dried fruits), fish, shellfish, crustaceans and minced meat products after appropriate sample preparation. Sulfite ions react with a mixture of potassium hexacyanoferrate(II), zinc sulfate, and sodium nitroprusside to form a red compound that is determined reflectometrically on the RQflex. For pre-testing a sample in an economic and quick way to estimate the sulfite concentration and a possible dilution factor prior to using this quantitative method we recommend our semi-quantitative MQuant test strips for sulfite. Further quantitative determination methods can be found with our Spectroquant tests.

Analysis Note

function control: conforms
- standard 1:
22 - 28 mg/l
- standard 2: 90 - 110 mg/l
- standard 3: 160 - 190 mg/l

Legal Information

REFLECTOQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.
Protocols & Articles


Analytical Method: Analytical Quality Assurance, Standard for Sulfite

Reagents: Cat.No. 106657  Sodium sulfite for analysis Cat.No. 108418  Titriplex® III for analysis Cat.No. 116754  Water for analysis   Preparation of a standard solution: Dissolve 1.57 g of sodium su...

Application Notes Reflectometry – Sulfite in Dried Fruits

This application note pertains to RQflex® 20 and all discontinued instruments (RQflex® 10, RQflex® plus)
Keywords: Sample preparations, Titrations

Application Notes Reflectometry – Sulfite in Potato Products

This application note pertains to RQflex® 20 and all discontinued instruments (RQflex® 10, RQflex® plus)
Keywords: Sample preparations

Spectroquant® Test Kits for Spectrophotometric Analysis

For Swift, Secure and Precise Analysis, There is No Better Choice Than Spectroquant® Test Kits.
Keywords: Environmental, Environmental Analysis

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