Analyzer With Auto-Acidification System

Applications include: Total sulfites in foods, dissolved SO₂and H₂S in amine scrubbing solutions, and sulfites in geological materials and wallboard.

The CM440 Total Sulfite, SO₂/H₂S Analyzer is a complete analytical system allowing the direct measurement of total sulfites or dissolved SO₂/H₂S in a wide variety of sample matrices and concentrations. Combining a automated, self-contained unit for the acidification of a sample (to evolve SO₂ and/or H₂S), with a highly sensitive SO₂/H₂S detector, the CM440 easily handles solid or liquid samples with concentrations from ppm levels to 100% without user calibration. UIC’s analyzers are rugged, accurate and adaptable to most applications. They are used extensively in industrial, research and educational laboratories worldwide. The CM440 system includes the following components pictured above:

CM5014S SO2 Analyzer

• No user calibration
• Wide, linear dynamic range
• Readability to 0.01 µg Sulfur
• User selectable display units
• Floppy disk drive for archiving data

Instrument Capabilities

A major advantage of the CM440 Total Sulfite, SO₂/H₂S Analyzer is the use of coulometric detection. Employing the principles of Faraday’s Law, the CM5014S SO₂/H₂S Analyzer automatically measures the absolute mass amount of sulfur dioxide and/or hydrogen sulfide evolved from an acidified sample. No user-calibration is required and linear detection is available from less than 1 µg sulfur to over 10,000 µg sulfur. Using this 100% efficient coulometric process, relative standard deviations of 0.2% or better are common for standard material. For smaller concentrations, an absolute deviation of approximately 1 µg S is typical.