defr Glossar

According to DIN 38404, the coloration and organic loading of water can be determined by absorption measurement (SAK). Depending on the wavelength used, absorption detects visible colour (e.g. yellow coloration at 390 nm in APHA Hazen units) or invisible substances (in the UV range, 254 nm).

Because any turbidity substances present will also affect the absorption reading, SIGRIST recommends turbidity compensation, which eliminates this error by measuring alternately at two different wavelengths. And because this method also makes it possible to display the turbidity value as second result, it opens the way to a cost-effective version of the photometer: the combined SAK/turbidity instrument. Drinking water treatment

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Leonardo Pio
Responsible for the application: Water, Industrial Processes, Beverages & Food for the regions: AG, LU, NW, OW, VS, BS, BL, SO, BE, FR, NE, VD, GE and JU
Andreas Corradini
Responsible for the application: Water, Industrial Processes, Beverages & Food for the regions: TI, GR, UR, GL, SZ, ZG, ZH, SH, SG, TG, AR and AI Traffic & Environment: whole Switzerland
Ihr Businesspartner für Getränke & Lebensmittel:
Für Wasser, Industrielle Prozesse, Verkehr & Umwelt kontaktieren Sie unseren Hauptsitz.

Your distribution partner for beverages & food:
For water, industrial processes, traffic & environment please contact our headquarters

Ihr Businesspartner für Getränke & Lebensmittel:
Für Wasser, Industrielle Prozesse, Verkehr & Umwelt kontaktieren Sie unseren Hauptsitz.

Your distribution partner for beverages & food:
For water, industrial processes, traffic & environment please contact our headquarters

Contact headquarters

Ralf Isenberg
Sales Manager ScrubberGuard
Öffnungszeiten:
Montag–Freitag 08:00–12:00 und 13:30–17:00
Feiertage & Betriebsferien:
Seppitag: 19. März 2025, Ostern: 18. – 21. April 2025, Auffahrt: 29. Mai 2025, Pfingstmontag: 9. Juni 2025, Fronleichnam: 19. Juni 2025, Bundesfeiertag: 01. August 2025, Maria Himmelfahrt: 15. August 2025, Allerheiligen: 01. November 2025, Maria Empfängnis: 08. Dezember 2025, Betriebsferien: 24. Dezember 2025 – 04. Januar 2026
Opening hours:
Monday–Friday 08:00am–12:00pm und 1:30pm–5:00pm
Public & company holidays:
St Joseph's Day: 19. March 2025, Easter: 18. – 21. April 2025, Ascension Day: 29. May 2025, Whit Monday: 09. June 2025, Corpus Christi: 19. June 2025, Federal Holiday: 01. August 2025, Assumption Day: 15. August 2025, All Saints Day: 01. November 2025, Conception of Mary: 08. December 2025, Company holidays: 24. December 2025 – 04. January 2026