Contact Careers Investor Relations Watermark Home Products Parameters Applications Rentals Support About Home > Parameters > Turbidity / TSS Turbidity / TSS Turbidity is the measurement of water clarity. Suspended sediments, such as particles of clay, soil and silt, frequently enter the water from disturbed sites and affect water quality. Suspended sediments can contain pollutants such as phosphorus, pesticides, or heavy metals. Suspended particles cut down on the depth of light penetration through the water, hence they increase the turbidity -- or "murkiness" or "cloudiness" -- of the water. High turbidity affects the type of vegetation that grows in water. For long-term, in situ continuous monitoring of turbidity, a self-cleaning turbidity sensor is usually necessary to avoid fouling of the sensor and maintain accuracy. Xylem YSI products measure turbidity with an optical sensor. Light from the emitter enters the sample and scatters off particles in the water. The light, scattered at 90 degrees, enters a detector fiber and is measured by a photodiode. This follows the nephelometric technique of measurement, and values are expressed in nephelometric turbidity units (NTUs). Handheld Sonde Sensor Benchtop System & Online Case Studies Using Turbidity Meters To Optimize Filter Backwashing Related Documents Xylem Surface Water Catalogue Spec Sheet: WTW Inolab Range Xylem HydroMet Catalogue The first address for FOS/TAC analysis - The new TitroLine® 5000 Catalogue: ProDSS Range Xylem Analytics UK Xylem Analytics is a major global manufacturer of market leading brands such as YSI, SonTek, Aanderaa, MJK and WTW. The group's success is built on innovation & application expertise with water quality monitoring instrumentation and flow monitoring instrumentation. Customers around the world choose Xylem Analytics because our instruments are designed and manufactured specially for their applications. More about Xylem Analytics UK Explore Home Products Parameters Applications Rentals Support About Get in touch Unit 7 Dunham's Court, Dunham's Lane, Letchworth, SG6 1WB salesuk@xyleminc.com +44 1462 673581 @XylemAnalytics facebook.com/XylemAnalytics Aanderaa, Bellingham + Stanley, ebro, Global Water, HYPACK, MJK, OI Analytical, Royce Technologies, SI Analytics, SonTek, WTW and YSI are trademarks of Xylem Inc. or one of its subsidiaries. Specifications on all products subject to change at any time. Learn more about Xylem and Xylem Analytics. We use cookies and beacons to improve your experience on our site. Read more about this in our Privacy Policy. Transparency in Supply Chains Bellingham + Stanley, ebro, SI Analytics, OI Analytical, WTW (lab & field products) and YSI (life science products) are all Xylem brands operating in the UK from Xylem’s Tunbridge Wells facility. Registered in England and Wales No. 140250. Registered Office: Bellingham & Stanley Ltd., Xylem, Longfield Road, Tunbridge Wells, Kent, TN2 3EY, UK. VAT No. GB 220 3350 25 Aanderaa, Global Water, MJK, Royce Technologies, SonTek, WTW (process products) and YSI (environmental products) are all Xylem brands operating in the UK from Xylem’s Letchworth facility. Registered in England and Wales No. 04838831. Registered Office: Xylem Analytics UK Ltd., Xylem, 7 Dunham's Court, Dunham's Lane, Letchworth Garden City, England, SG6 1WB, UK. VAT No. GB 828 1979 85 Copyright © 2016-2021 Xylem Analytics UK Ltd. / Xylem Inc. All Rights Reserved. | Terms & Conditions | Rental Terms & Conditions STEP 1 OF 2 Privacy By providing personal data to Xylem, you acknowledge that you have read and understand the terms of our Website Privacy Statement Accept Why am I seeing this? English Dansk Magyarország Россия Nederland Français Polski Svenska Español Italiano Deutsch Norsk Suomi Português slovenčina 中文 日本語