Residual Analyzers, Including Reagentless Chlorine Analyzers, Fruit Washing Chlorine Analyzers, and High Range Chlorine Analyzers

For maximum safety in the production of clean water, it is essential to chlorinate to the point of establishing a level of residual chlorine. Assurance that the treatment has been properly carried out must be confirmed through the usage of testing equipment capable of measuring residual chlorine levels.

Hydro Instruments offers a collection of advanced residual analyzers that can be relied on for years of accurate measurements. Made with the finest corrosion-resistant materials available and thoroughly tested during assembly, our residual chlorine analyzers are capable of providing precise readings in applications where accuracy is a necessity.

To achieve and maintain the desired flow rate for water samples, the usage of a flow meter and rate control valve in conjunction with a residual analyzer may be necessary. Call Hydro Instruments for further information and to find a chlorine analyzer that matches your industry’s particular specifications.

Applications

• Municipal Drinking Water
• Municipal Waste Water Effluent
• Cooling Tower
• Rubber Processing

• Flour Mills
• Fruit and Vegetable Packing
• Rubber Gloves
• Poultry Farming
• Gold Extraction
• Cobalt Extraction
• Swimming Pools
• Hydraulic Fracturing
• EV Car Batteries
• Pulp and Paper Mills
• Car Assembly Plants
• Power Plants and Generation
• Pharmaceuticals

Definition of Terms & Types of Chlorine Commonly Measured

Residual Chlorine – The available chlorine remaining after the reaction interval and still available to combat the more resistant organisms and to safeguard against any later contamination.

Free Chlorine – The portion of the total residual chlorine remaining in the chlorinated water or waste at the end of a specified contact period, which will react chemically and biologically as hypochlorous or hypochlorite ions.

Applications typically measuring free chlorine residual include:

• Municipal Drinking Water Treatment
• Cooling Tower
• Fruit & Vegetable Wash-down

Combined Chlorine – The portion of the total residual chlorine remaining in the chlorinated water or waste at the end of a specified contact period, which will react chemically and biologically as chloramines or organic chlorine.

Total Chlorine – The sum of both the free chlorine residual and combined chlorine residual.

Applications typically measuring total chlorine residual include:

• Municipal Waste Water Effluent
• Pool & Spa

Measurement Methods

Peracetic Acid: Disinfection – During the measurement process, peracetic acid is often utilized as a disinfectant. It’s capable of eliminating large quantities of microorganisms in a short period of time.

Colorimetric – Uses DPD reagents that cause a chemical reaction to change the color of the water. A photocell is used to determine the residual concentration of the sample based on the color change.

Amperometric: Open Cell – Uses two electrodes in direct contact with the sample water, with the sample water acting as an electrolyte. An electrical signal is produced proportional to the residual concentration. The monitor is able to determine the residual level of the sample water based on the strength of this electrical signal.

Amperometric: Probe – Uses two electrodes submerged in an electrolyte behind a permeable membrane. The target disinfectant species is able to permeate through the membrane where it can read. An electrical signal is produced proportional to its concentration. The monitor is able to determine the residual level of the sample water based on the strength of this electrical signal.

Potentiostatic: Probe – Uses three electrodes that operate in the same fashion as the Amperometric: Probe style.

For Advanced Chlorine Analyzer Technologies, Call Hydro Instruments

Since 1978, Hydro Instruments has developed innovative and effective flow measurement monitoring equipment for clients worldwide. With our line of residual gas analyzers and chlorine measuring systems, water supply centers, food processing plants, and other industries can have confidence they’re receiving accurate readings. 

Contact us today to learn more about our residual analyzers and to place an order.