Learn more about Sigrist

Sigrist-Photometer AG is a Swiss manufacturer of optical measuring instruments, headquartered in Ennetbürgen, Switzerland. Founded in 1946 by Dr. Willy Sigrist, the company developed the first online turbidity meter, based on flicker mirror technology. To this day, all products are developed and manufactured at the headquarters, under the Swiss Made label.

In process measurement, Sigrist is a reference in turbidity and photometric analysis. The portfolio includes process and laboratory turbidity meters, color and UV absorption meters, oil-in-water analyzers and the SiCon control units. The OilGuard 2 W, for example, detects oil in water from 0.1 µg/l. The company holds ISO 9001, ISO 14001 and ISO 45001 certifications, as well as ATEX certified equipment for hazardous areas.

These instruments work in drinking water and wastewater treatment, water reuse, industrial processes, and traffic and environmental monitoring. In Switzerland’s Gotthard tunnel, 210 FireGuard sensors have been detecting smoke since 2007. Through a network of sales and service partners, Sigrist is present in more than 80 countries.

In Brazil, Alutal is Sigrist’s exclusive distributor for the Water and Industrial Processes segments, with local pre-sales, sales, after-sales and technical service. In Water, it serves sanitation companies, water and wastewater treatment plants, water reuse systems and OEMs that build equipment for these solutions. In Industrial Processes, it serves oil and gas, petrochemicals and refineries, chemicals and pharmaceuticals, power plants, steel mills, pulp and paper, and sugar and ethanol mills, including corn ethanol plants. That is why the Alutal team guides each customer from application analysis to the choice of the analyzer best suited to the process.