Liquid Analysis

Liquid Analysis

Liquid analysis covers the sensors, transmitters, and analyzers used to determine key chemical and physical parameters directly in process streams, utilities, and laboratory workflows. Typical measurements include pH/ORP, conductivity, dissolved oxygen, chlorine or disinfectant residuals, turbidity, nutrients, and organic load indicators such as TOC/COD/SAC. These measurements complement flow, level, pressure, and temperature by confirming that the right chemistry is being produced, treated, or discharged.

Endress+Hauser’s liquid analysis portfolio spans individual sensors and transmitters as well as complete measuring points, including laboratory instruments and automatic samplers. Digital sensor technologies such as Memosens enable robust signal transmission and support standardized handling of calibration and sensor data across the lifecycle. Process photometers and specialized analyzers extend measurement capability to colorimetric parameters (e.g., nutrients, metals, hardness) and other application-specific constituents. 

Benefits center on consistent product quality, process safety, and environmental protection. Continuous or high-frequency monitoring makes it possible to control neutralization, disinfection, aeration, or clarification more tightly, reducing chemical consumption and preventing excursions. High-precision instruments support higher yield and fewer quality deviations, while improved visibility into process conditions reduces the risk of corrosion, scaling, biofouling, or microbiological growth.

Typical applications include drinking water and wastewater treatment (disinfection control, nutrient monitoring, aeration optimization, effluent compliance), food and beverage processing (CIP verification, rinse-water control, product quality parameters), and life-science and pharmaceutical utilities (WFI/clean utilities monitoring and validated documentation). In chemical processing, online pH, conductivity, and selective analyzers are used to stabilize reactions, protect downstream equipment, and verify final product properties.

Implementing liquid analysis effectively requires attention to sample representativeness, sensor mounting and wetted materials, cleaning and calibration concepts, and the management of drift and fouling. State-of-the-art communication interfaces and protocols support integration into control strategies and plant asset management, enabling consistent configuration, maintenance planning, and audit-ready records. 
Endress+Hauser

Miller Mechanical Specialties, an exclusive authorized representative of sales and service for Endress+Hauser.