de Glossar

Fortunately, the water level of the August flood in Switzerland receded faster than in New Orleans. Even if some repairs to damaged buildings and infrastructure facilities will still take months, the return to daily routines has been rapid for most. For those still affected, we hope that normalcy will return quickly with as little loss as possible.

We have been alerted to reports about hazards to drinking water caused by unprocessed waste water and pollution due to heating oil that has leaked into the lakes from which many communities draw their drinking water. Those with foresight have installed a measuring device at the water treatment input point that continually checks for oil traces and organic contamination.

But it is not only surface water that is affected. When there is flooding and raised ground water levels, contamination that is not usually present may also be evident in ground water, especially in bank filtrate. After the flooding in 1999, high bacterial counts were found in the ground water wells near the Limmat River effluent in Zurich, even though the turbidity value had not risen or risen very little. There was, however, a clear increase in the spectral absorption coefficient, or UV absorption value, and returned to normal only after several weeks. This was probably due to changes in the microstructures of the bank sand layers that were disturbed by the increased ground water currents. Particularly when it comes to ground water wells, a UV absorption measurement can provide added certainty that water quality is assured.

SIGRIST photometers reliably measure turbidity, coloration, UV absorption, oil traces and particle count in drinking water and thereby help to ensure unquestionable quality and optimal process handling during treatment.

Products: AquaScat WTM | AquaScat P | AquaScat HT | ColorPlus bypass | ColorPlus in-line | OilGuard

Contact distribution partner

{{selectedCountry.Name}} {{country.Name}}

Please select your businessarea


Please select


Please select your businessarea

{{selectedCountry.Name}} {{country.Name}}
{{vm.getBusinessAreaStringByVendor(vendor)}} {{area.Name}}
René Gehri
Water, Beverages & Food, Industrial Processes
Vincenzo Pedranz

Contact headquarters

Felix Joller
Sales Manager ScrubberGuard
Montag–Freitag 08:00–12:00 und 13:30–17:00
Feiertage & Betriebsferien:
Ostern: 15. – 18. April 2022, Auffahrt: 26. Mai 2022, Pfingstmontag: 06. Juni 2022, Fronleichnam: 16. Juni 2022, Bundesfeiertag: 01. August 2022, Maria Himmelfahrt: 15. August 2022, Allerheiligen: 01. November 2022, Maria Empfängnis: 08. Dezember 2022, Betriebsferien: 24. Dezember 2022 – 02. Januar 2023
Opening hours:
Monday–Friday 08:00am–12:00pm und 1:30pm–5:00pm
Public & company holidays:
Easter: 15. – 18. April 2022, Ascension Day: 26. May 2022, Whit Monday: 06. June 2022, Corpus Christi: 16. June 2022, Federal Holiday: 01. August 2022, Assumption Day: 15. August 2022, All Saints Day: 01. November 2022, Conception of Mary: 08. December 2022, Company holidays: 24. Decmber 2022 – 02. January 2023