Hanna Instruments

Scientific Equipment

Safety Data Sheets

SDS search & quick download

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Certificates of Analysis

Download a copy of the certificate of analysis for your solution

Sulphite levels (measured as Na2SO3) need to be monitored in water applications such as boiler feed and effluent water, where the sulphite concentration must be maintained at about 20 mg/L to prevent oxidation or pitting of metal components. Sulphite ions are also toxic to aquatic life, so sulphite levels must be monitored in aquatic environments.


Hanna supply a variety of chemical test kits and automatic titrators suitable for measuring sulphite levels in water samples.