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Process Analytics – Liquid, Gas, Pure Water

Analytical measurement solutions for industrial environments

METTLER TOLEDO’s process analytics solutions for industrial manufacturing processes allow companies to better control their production through at-line, on-line or in-line analytical measurements.

Solutions cover:

  • Liquid Analytics – in-line measurements
  • Pure Water Analytics – on-line measurements
  • Gas Analytics – in situ and extractive applications




Process analytics in the context of liquid, gas, and pure water refers to the use of analytical techniques to monitor and control industrial processes involving these substances. These techniques provide real-time or near-real-time data on key parameters such as composition, concentration, purity, and other relevant properties. Here’s an overview of process analytics in each of these domains:

Liquid Process Analytics:

  1. pH Measurement: pH meters are used to measure the acidity or alkalinity of liquid process streams. pH control is critical in various industries, including chemical manufacturing, wastewater treatment, and food and beverage production.
  2. Conductivity Measurement: Conductivity sensors measure the electrical conductivity of liquid solutions, providing insights into their ionic content and overall purity. This is important in applications such as water treatment and chemical processing.
  3. Dissolved Oxygen Measurement: Dissolved oxygen sensors monitor the amount of oxygen dissolved in liquid process streams. This is crucial in industries such as wastewater treatment, aquaculture, and biotechnology.
  4. Chlorine Monitoring: Chlorine analyzers measure the concentration of chlorine in liquid process streams, essential for disinfection in water treatment, swimming pool management, and food processing.
  5. Turbidity Measurement: Turbidity sensors measure the cloudiness or haziness of liquid samples, often used in water quality monitoring and environmental analysis.

Gas Process Analytics:

  1. Gas Chromatography (GC): Gas chromatographs analyze the composition of gas mixtures by separating and quantifying individual components. GC is widely used in petrochemical, environmental, and pharmaceutical industries for process optimization and product quality control.
  2. Gas Sensors: Gas sensors detect and quantify specific gases in process streams, providing continuous monitoring of key parameters such as oxygen, carbon dioxide, methane, and volatile organic compounds (VOCs).
  3. Mass Spectrometry (MS): Mass spectrometers can analyze gas samples to identify and quantify individual components based on their mass-to-charge ratio. MS is used in various industries for process monitoring, emissions monitoring, and environmental analysis.
  4. Infrared (IR) Spectroscopy: IR analyzers can analyze gas samples by measuring the absorption of infrared radiation. IR spectroscopy is used for process monitoring in industries such as chemical manufacturing, pharmaceuticals, and environmental monitoring.

Pure Water Process Analytics:

  1. Resistivity Measurement: Resistivity sensors measure the electrical resistivity of water, providing an indication of its purity. This is important in industries such as pharmaceutical manufacturing, semiconductor fabrication, and power generation.
  2. TOC Analysis: Total organic carbon (TOC) analyzers measure the concentration of organic carbon compounds in water samples. TOC analysis is critical in industries such as pharmaceuticals, electronics, and wastewater treatment.
  3. Particle Counting: Particle counters detect and quantify particles in water samples, providing information about cleanliness and purity. This is important in industries such as pharmaceutical manufacturing, semiconductor fabrication, and medical device manufacturing.
  4. Chlorine and Chloramine Monitoring: Analyzers measure the concentration of chlorine and chloramine disinfectants in pure water systems, ensuring effective microbial control and system performance.

Benefits of Process Analytics:

  • Process Optimization: Real-time monitoring and control of key parameters for improved process efficiency and product quality.
  • Quality Assurance: Ensure compliance with regulatory standards and product specifications.
  • Troubleshooting: Rapid detection of anomalies or deviations for timely corrective action.
  • Cost Savings: Prevention of product loss, reduced downtime, and optimized resource utilization.

Process analytics in liquid, gas, and pure water systems play a crucial role in ensuring the efficiency, safety, and reliability of industrial processes across various sectors. By leveraging advanced analytical techniques and instrumentation, industries can achieve better control over their processes and maintain high standards of product quality and environmental compliance.

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