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dissolved oxygen measurement Applications

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    Process Analytics - Biotech and Hygienic Processes

    METTLER TOLEDO/INGOLD offers a wide range of hygienic and sterilizable/auto- clavable measurement solutions for biotech and hygienic processes. Based on field experiences and expertises in hygienic design for CIP (Cleaning-in-Place) and SIP (Sterilization-in-Place) applications our solutions comply with the most stringent industry requirements. Critical biotech/hygienic applications in pharmaceutical, food and beverage are controlled by measuring pH, conductivity, dissolved oxygen, CO2 and turbidity.

    By Mettler - Toledo Int. Inc based in Greifensee, SWITZERLAND.

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    Process Analytics - Water Purification (THORNTON)

    THORNTON specializes in measurements for pure and ultrapure water treatment with parameters of resistivity, conductivity, total organic carbon (TOC), flow, pH, ORP, dissolved oxygen and ozone. THORNTON products are frequently used in semiconductor and microelectronics manufacturing, pharmaceutical and biotechnology processing, and power and steam generation, as well as food and beverage production.

    By Mettler - Toledo Int. Inc based in Greifensee, SWITZERLAND.

  • Oceanographic Monitoring

    For survey operations up to 6000m depth (and deeper by special request), Valeport offer instruments to measure and record the classic physical parameters of Temperature, Depth, Salinity, Density, Currents and Waves. Along with the most accurate Sound Velocity sensors in the world; the ability to interface other parameters / sensors such as pH, Dissolved Oxygen Turbidity, Flourometer, Transmissometer and PAR; Housings and deployment frames to suit in-line moorings, profiling and seabed deployments, Valeport can cater for all your oceanographic survey requirements.

    By Valeport Ltd based in Totnes, UNITED KINGDOM.

  • Fermentation Off-Gas Analysis

    In pilot plant and production scale fermentors, information relating to yield of product is of high importance. Hiden's gas analysers are configured with a multiport Off-Gas analysis manifold enabling simultaneous sampling from multiple fermentors. Data is used for the calculation of the respiratory quotient, carbon production rate and oxygen uptake rate. The Off-Gas measurement provides the respiratory quotient in a time and space averaged form and with good response time. By comparison data from multiple dissolved species probes are more specific and can provide information about stirring efficiency, aeration and feed distribution within the fermentor. Dissolved gas measurements have the advantage of giving direct information on gas uptake and for dissolved output rates. Hiden Analyticaloffers systems with either Off-Gas or dissolved species inlets or both.

    By Hiden Analytical Ltd. based in Warrington, UNITED KINGDOM.

  • Fermentation Off-Gas Analysis

    In pilot plant and production scale fermentors, information relating to yield of product is of high importance. Hiden's gas analysers are configured with a multiport Off-Gas analysis manifold enabling simultaneous sampling from multiple fermentors. Data is used for the calculation of the respiratory quotient, carbon production rate and oxygen uptake rate. The Off-Gas measurement provides the respiratory quotient in a time and space averaged form and with good response time. By comparison data from multiple dissolved species probes are more specific and can provide information about stirring efficiency, aeration and feed distribution within the fermentor. Dissolved gas measurements have the advantage of giving direct information on gas uptake and for dissolved output rates. Hiden Analyticaloffers systems with either Off-Gas or dissolved species inlets or both.

    By Hiden Analytical Ltd. based in Warrington, UNITED KINGDOM.

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    Surface water quality testing for the environmental monitoring industry

    Aquaread stock a wide range of testing equipment designed to track a number of parameters and water quality testing measures. These can be used in many different bodies of water, including rivers, lakes, streams and seawater. The advantages of tracking water quality and testing for numerous parameters means that it is easier to notice changes which could cause damage to aquatic ecosystems. Early detection not only helps with monitoring water quality, but also helps to put mitigating measures in place. We have a wide range of parameters, although the most popular of these allow for surface water testing, pH, temperature, electrical conductivity and measuring levels of dissolved oxygen. These are standard measurements included in most standard Aquaprobes, although if you require more specific parameter testing then there are a number of additional parameters which can be added onto to the base Aquaprobe to compensate this.

    By Aquaread Limited based in Broadstairs, UNITED KINGDOM.

  • Filamentous Bulking Control with Hydrogen Peroxide

    Basis of Control with Hydrogen Peroxide Hydrogen peroxide may be used to correct a serious filamentous bulking situation or, preferably, to prevent one from occurring until adjustments can be made to remove the cause. When applied to the return activated sludge, hydrogen peroxide supplies dissolved oxygen which helps restore the microbial activity necessary for effective operation, while selectively oxidizing the filaments which retard settling. The effective dose of hydrogen peroxide is a function of time and concentration, and varies from plant to plant. To correct a serious bulking problem, immediate results may be obtained by adding 100 - 200 mg/L H2O2 to the biosolids recycle line. Once control of bulking is obtained, the dose may be reduced to 25 - 50 mg/L H2O2 to prevent re-occurrence. Practical Considerations Filamentous bulking of municipal activated sludge is not a normal occurrence, and suggests more fundamental problems may be at work (e.g., low dissolved oxygen, high sulfide input, heavy organic loading, nutrient imbalance, improper sludge age, or rapid changes in influent characteristics). Consequently, the use of chemicals such as hydrogen peroxide to control bulking should be pursued in concurrently with more fundamental corrective measures.

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

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