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 2026, Ostern: 03. – 06. April 2026, Auffahrt: 14. Mai 2026, Pfingstmontag: 25. Mai 2026, Fronleichnam: 4. Juni 2026, Bundesfeiertag: 01. August 2026, Maria Himmelfahrt: 15. August 2026, Allerheiligen: 01. November 2026, Maria Empfängnis: 08. Dezember 2026, Betriebsferien: 24. Dezember 2026 – 03. Januar 2027
Opening hours:
Monday–Friday 08:00am–12:00pm und 1:30pm–5:00pm
Public & company holidays:
St Joseph's Day: 19 March 2026, Easter: 03 – 06 April 2026, Ascension Day: 14 May 2026, Whit Monday: 25 May 2026, Corpus Christi: 4 June 2026, Federal Holiday: 01 August 2026, Assumption Day: 15 August 2026, All Saints Day: 01 November 2026, Conception of Mary: 08 December 2026, Company holidays: 24 December 2026 – 03 January 2027