We make water analysis simpler.
Since our founding we have been committed to providing high-quality products that are simple to use and accurate. These are the values that Clifford and Kathryn "Kitty" Hach founded the company on in 1947, and we couldn't be more proud.
For more than 60 years, we've been at the crest of the industry - finding solutions that help you best manage your water. Our analytical instruments and reagents are used to test the quality of water in a variety of industries and markets - from around the corner, to around the globe.
Water analysis has to be right. You deserve complete solutions you can be fully confident in. Hach is your resource for expert answers, outstanding support, and reliable, easy-to-use products.
Source Water Monitoring
Source water can be vulnerable to accidental or intentional contaminants and weather related or seasonal changes. Monitoring the quality of your incoming source water enables you to anticipate changes to the treatment process that are needed to react to storms, algal blooms, industrial discharge, chemical spills, reservoir stratification/destratification, construction activity, sewage spills and other natural or man-made occurrences.
Disinfection Process Control
Regardless of the type of disinfectant used, analytical testing can help you comply with regulations, maximize disinfection efficiency, determine adequate CT credits, optimize chemical feed pump rates, reduce the risk of disinfection byproducts, and control taste and odor issues. A wide range of analytical methods and instrumentation is available to address the specific needs of each unique plant.
Coagulation, Flocculation, and Clarification
Coagulation, flocculation, and clarification are perhaps the most overlooked processes when installing instrumentation in a water treatment facility. This may be due to the fact that monitoring at these points is typically not a regulatory requirement. However, every step in the treatment process depends on preceding steps and those that follow to make the entire process function effectively. Measurement is critical at every step to optimize the process and control operational costs.
Disinfection Byproduct Reduction
Advanced analytical techniques are available to identify the specific disinfection byproducts formed in the treatment process and the distribution system. These techniques are beyond the technical and economic resources available at most facilities. Fortunately, alternate methods are available for screening for disinfection byproducts and for predicting disinfection byproduct formation that can be used routinely by most facilities with limited resources.
Monitoring turbidity of filter effluent is required for regulatory compliance in many countries and helps to assure that the final product is safe for public consumption. In addition to meeting regulatory requirements, monitoring turbidity is also beneficial for optimizing filter performance, establishing filter backwash cycles, and detecting filter breakthrough. Turbidity instrumentation is available to meet the unique needs of both conventional and membrane filtration facilities.
Monitoring specific parameters in the distribution system is commonly a regulatory requirement to assure delivery of safe drinking water to the community. Additional monitoring can also provide early indication of nitrification issues, water infiltration, line breaks, extended water age, or potential security violations.
The TU5 Series employs a patented optical design that sees more of your sample than any other turbidimeter, delivering the best low level precision and sensitivity while minimizing variability from test to test.
Source water can be vulnerable to an accidental or intentional contaminating events. Monitoring an input water source can provide useful information to the drinking water plants that process incoming water. Plants can shut their intake down should their source water panel parameters change significantly.
The FilterTrak sensor uses U.S. Environmental Protection Agency (USEPA) approved Hach FilterTrak Method #10133, the method specified in the USEPA LT2 draft guidance manual for compliance monitoring of membrane filters. The sensor meets all regulatory requirements for individual filter and combined effluent monitoring.
The Hach AMTAX sc Ammonium Analyzer measures NH4-N concentrations as low as 0.02 mg/L and as high as 1000 mg/L. With a fast 5 minute response time, it enhances control of the nutrient removal process.
The Phosphate Analyzer is environmentally controlled for rugged, outdoor installations, provides a wide measurement range for a variety of wastewater applications, and comes with the fully featured Plug & Play digital controller.
PEEK, Convertible Body Style, 10m Cable, General Purpose Glass pH Electrode, Integrated Digital Electronics for Plug and Play Capability with Hach sc Digital Controllers.
The proven technology you have come to expect from Hach just got better. Built with the future of water analysis in mind, the DR 3900 Spectrophotometer will give consistently accurate results in a simpler testing format.
The DR6000™ is the industry’s most advanced lab spectrophotometer. It offers high-speed wavelength scanning across the UV and Visible Spectrum, and comes with over 250 pre-programmed methods including the most common testing methods used today.
A unique barcode label on each Hach TNTplus Vial Chemistry is automatically read by the spectrophotometer when used with Hach's DR spectrophotometers to identify the appropriate method and take the measurement. While increasing ease-of-use and speed of analysis, potential errors are significantly reduced.
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Contact: Aimee St. Peter
For drinking water treatment plants (DWTPs), the EPA’s Disinfection Byproduct Rule (DBP) is a way of life. Unfortunately, for many facilities the equipment and operations haven’t evolved with the regulation mandates, leaving facilities in a tough spot. For a DWTP in Douglas County, KS, its challenges with accurate TOC measurement and testing, along with expensive calibrations and extended downtime with its prior TOC analyzer led it to trialing the Hach QbD1200 TOC Analyzer. Read the full case study to learn more.
In 2013 the Drinking Water Inspectorate for England & Wales announced that water samples collected in England and Wales must be tested in a laboratory that meets specific standards for drinking water sampling and analysis. At the time of the new instruction, the chlorine method employed at the Welsh Water Bretton laboratory was unable to meet these requirements, notably for the prescribed limit of detection. This prompted the laboratory to investigate new analytical options for monitoring residual chlorine.
Determining trihalomethane levels using standard analytical methods requires expensive equipment and highly qualified personnel, which also means that analysis costs are very high. For these reasons, trihalomethane analysis poses a serious problem for companies that supply drinking water. Read the full application note to learn how two drinking water laboratories improved quality control of water delivered to end users.
Dosing of the precipitant was adjusted manually based on the laboratory measurement value of the daily composite sample and so was unable to respond to possible peaks. Although being compliant with the effluent limits, the values observed fluctuate between 0.2 and 0.8 mg/L.
Hach LDO® technology improves the efficiency of pharmaceutical plant’s wastewater treatment process, helping to protect the environment and the community.
Levels of phosphorus, a chemical element that promotes organic growth, must be controlled in wastewater coming from beverage, food and dairy processing plants. Failure to control phosphorus accurately has a negative impact on water quality and can lead to large fines.
Responsibility for analysis results lies with the users themselves or their supervisors. Both are therefore liable for any incorrect interpretations and decisions that are made as a consequence of incorrect data.
Measuring DO in the CBOD procedure was once troublesome and inefficient for lab personnel and operators alike at the Southside Wastewater Treatment Plant in Tyler, Texas. But all that changed when they adopted new luminescent technology that has eliminated problems with instrument drift, slow measurements, and frequent maintenance.
An electrochemical cell for pH measurement always consists of an indicating electrode whose potential is directly proportional to pH, a reference electrode whose potential is independent of pH, and the aqueous sample to be measured.