The ECD SMS-22 Sulfide Ion Analyzer is an all-in-one solution for continuous measurement of total sulfide in aqueous samples. Using a sulfide ion selective electrode (ISE) combined with controlled pH adjustment, it delivers accurate and reliable sulfide monitoring in applications such as wastewater, refineries, tanneries, and industrial processes.
The analyzer automatically raises sample pH using potassium hydroxide (KOH) to ensure proper measurement conditions, while a pH sensor compensates for sulfide equilibrium to calculate total sulfide concentration. With integrated measurement and calculation, the SMS-22 provides dependable, real-time sulfide analysis for water treatment and environmental monitoring applications.
Compact All-in-One System – Fully integrated process including sample conditioning, sulfide measurement, pH measurement, neutralization, draining, and rinsing
Wide Measurement Range (ISE Technology) – Accurate sulfide detection from 20 ppb to 500 ppm using economical, replaceable electrode cartridges
pH-Optimized Measurement – Automatic pH adjustment ensures accurate detection of sulfide ions at high pH conditions
Post-Measurement Neutralization – Reduces sample pH to a safe level (~pH 8) after analysis
Automated Sequential Sampling – Adjustable sampling frequency from 2 to 10 samples per hour using built-in relays and timers
Low Reagent Consumption – Minimal chemical usage, with less than 2 gallons/month at maximum sampling rate
- Municipal and industrial wastewater treatment
- Refineries and petrochemical plants
- Tanneries and pulp & paper industries
- Environmental monitoring and compliance
