American Sigma

About American Sigma

Manufacturer of open channel flow measurement and sampling instruments for wastewater and water quality monitoring. Products include the Sigma 900 and 900MAX portable wastewater samplers, Sigma 910 and 920 area velocity flow meters, and data management software. Equipment is used for NPDES stormwater compliance, CSO monitoring, industrial wastewater discharge monitoring, and WWTP process control. Acquired by Hach Company; now operates as a Hach legacy brand. Product categories: flow meters, composite samplers, refrigerated samplers, area velocity meters, wastewater monitoring systems.

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