Application Note: Continuous Monitoring Of Drinking Water Provides Assurance Of Safety
A water utility in Ohio wanted to learn more about the variability of water quality parameters such as pH, ORP, turbidity, and chlorine. Previously, most of these parameters had been measured by spot sampling protocols with only a few
measurements during a daily period. In order to more accurately assess the water variability, the utility used a YSI 6920DW Drinking Water Multiprobe
Veterinary Drug Residue Analysis Using The AutoMate-Q40: An Automated Solution To QuEChERS
QuEChERS is a Quick-Easy-Cheap-Effective-Rugged-Safe extraction method that has been developed for the determination of pesticide residues in agricultural commodities.
Application Note: Real-Time Monitoring-Through Swell And High Water
Application article about water quality monitoring pontoon providing continuous data in the Burry Inlet, an estuary in Wales. By YSI
The Basics: Monitoring Deionized Water
Years ago, high purity water was used only in limited applications. Today, deionized (Dl) water has become an essential ingredient in hundreds of applications including: medical, laboratory, pharmaceutical, cosmetics, electronics manufacturing, food processing, plating, countless industrial processes, and even the final rinse at the local car wash.
Application Note: Low-Flow Sampling Of Water Quality Parameters Used In Determining Groundwater Stability
In April 1996, the U.S. EPA developed and published a document entitled Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures. The document states that “the most common ground water purging and sampling methodology is to purge wells using bailers or high speed pumps to remove 3 to 5 casing volumes followed by sample collection.” Adverse impacts can occur through this method affecting sample quality by increasing levels of turbidity. These problems can often be mitigated by using low-flow purging and sampling to reduce sampling-induced turbidity. By YSI
Measuring The Chlorine Content In The Emergency Chlorination Of Waterworks
Many municipal waterworks perform no permanent disinfection of drinking water. However, in many cases
a process known as emergency chlorination takes place. The process is switched on in case of need, adding
chlorine to the drinking water as a disinfectant.
Application Note: Vertical Profiling Safeguards Drinking Water And Sheds Light On Cyanobacteria
A search for algal toxins in North Carolina reservoirs has evolved into an ongoing early warning system for three important drinking water reservoirs—which serve two large cities—and yielded a greater understanding of the dynamics of blue-green algae, or cyanobacteria, in the state’s reservoir system. By YSI
Application Note: Using Real-Time Telemetry For Ecological Monitoring Of Coastal Wetlands
The Grand Bay National Estuarine Research Reserve (NERR)in Mississippi is one of 27 protected estuarine reserves across the United States. By YSI
Improved Efficiencies In TOC Wastewater Analysis For Standard Method 5310B And EPA Method 415
Total organic carbon (TOC) measurement is of vital importance to the operation of water treatment due to organic compounds comprising a large group of water pollutants. TOC has been around for many years, and although it is a relatively simple analysis in theory, operational efficiency is paramount.
Disinfection By-Products (DBP) Precursor Monitoring
Chlorine has long been used as a primary disinfection method for many water and wastewater treatment applications. However, there is growing concern about the harmful DBP’s produced by the use of chlorine.