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toxicity testing Applications

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    Oxygen monitoring from aerobic and anaerobic for toxicity test

    Toxicity of pure chemicals is assessed using respirometers by adding increasing concentrations to an active culture. The concentration at which oxygen uptake or gas production begins to decrease is known as the “threshold toxicant concentration.”

    By Respirometer Systems and Applications, LLC based in Springdale, ARKANSAS (USA).

  • Spectrophotometry for toxic waste industry

    By Buck Scientific Inc based in East Norwalk, CONNECTICUT (USA).

  • Waste water respirometry solutions for toxicity testing

    If industrial wastewater entering a treatment works contains toxic components the rate of biodegradation will be inhibited or stop completely. This can result in failed consents and will certainly give rise to operational problems. Visible indications include deflocculation, bulking and the appearance of filamentous bacteria. Sometimes, there are no visible effects. When the sludge bacteria are inhibited, there is the possibility of toxicity carryover in the effluent that is discharged to receiving waters. With...

    By Strathkelvin Instruments Ltd. based in North Lanarkshire, UNITED KINGDOM.

  • Waste water respirometry solutions for toxicity reduction tests

    In industrial manufacturing companies, before a new process comes on-line, it is important to measure the toxicity of the effluent stream. This is especially the case for companies who treat their own waste. From the toxicity value (EC50) obtained, it may be a cost-effective solution to simply discharge the effluent to the treatment works at a slow and defined rate to minimise damage to the activated sludge. Following a period of acclimatisation it is often possible to increase feed rates to the plant and this...

    By Strathkelvin Instruments Ltd. based in North Lanarkshire, UNITED KINGDOM.

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    ph determination for soil testing

    Determination of the pH value provides information about the acid or base action of the soil solution. This in turn is enormously important for the nutrient supply and microbial activity of the soil. For example, many metals (trace elements) are considerably more mobile in acidic soils. If the soil pH values are very low, toxic levels can soon be reached and these can damage the roots of plants. On the other hand, excessively high pH values quickly lead to a shortage of trace elements because of immobilization.

    By Metrohm AG based in Herisau, SWITZERLAND.

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    Waste water treatment plants Screening area: stripping

    Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® offers high meteorological solutions. To ensure the safety of operatives in the screening building/area of waste water treatment...

    By Chromatotec Group based in Val de Virvée, FRANCE.

  • Waste water respirometry solutions for toxicity tracking

    If toxicity is identified in a mixed sewage entering a treatment works, the problem for the plant manager is to track and identify the source of the toxicity. This can be done by sampling the effluent stream at various points in its length. By working in a logical sequence back up the sewer network the number of samples can be minimised. This type of testing should be rigorously enforced for new product introduction by a waste producer, as well as sampling the effluents directly at source. The samples would be...

    By Strathkelvin Instruments Ltd. based in North Lanarkshire, UNITED KINGDOM.

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    Waste water treatment plants Personnel Safety & H2S filter management

    Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® offers high meteorological solutions. As a result of the confinement of the waste water stations, toxic components such as H2S and...

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Waste water treatment plants Air quality control by TRS MEDOR

    Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® offers high meteorological solutions. At the entrance of the waste water plants, where the waste water arrives, strongly smelling...

    By Chromatotec Group based in Val de Virvée, FRANCE.

  • Automation of molecular pathology

    Tumor markers found in blood, urine and body tissues can be used in diagnosing and treating cancer. Each tumor marker is indicative of a particular disease and thus can be used for the screening, monitoring and diagnosis of specific tumor types. In addition to being used in prognosis, these molecular markers help to predict the response, resistance and toxicity to therapy. For example, BCR-ABL gene sequence detection is used to diagnose chronic myelogenous leukemia and acute lymphatic leukemia.

    By Aurora Biomed Inc. based in Vancouver, BRITISH COLUMBIA (CANADA).

  • Waste water respirometry solutions for toxicity based consents

    Water companies, water authorities or publicly-owned treatment works (POTW) need to have some knowledge of the composition of the wastes they it receive. In addition to testing for ammonia and BOD or COD levels, treatment works can license industrial discharges on the basis of concentrations of some of the known toxic compounds. However, it is recognised that very many non-regulated toxic materials still enter the treatment works and reduce the efficiency of biodegradation, and may cause toxic shock. The way is...

    By Strathkelvin Instruments Ltd. based in North Lanarkshire, UNITED KINGDOM.

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    Testing Fume Hood Flow Dynamics using SF6 as a Tracer Gas

    A safe laboratory environment requires an effective method for clearing toxic material from fume hoods. Since all handling of toxic materials is completed in these hoods, it is critical to have a procedure to evaluate their operation to assure adequate protection for laboratory workers. The InfraRan Specific Vapor Analyzer, factory calibrated for SF6, is an ideal instrument for measuring fume hood efficiency in accordance with ASHRAE and other standards. Manufacturers identify the flow dynamics (factors that...

    By Spectro Scientific based in Chelmsford, MASSACHUSETTS (USA).

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    Waste water treatment plants Air quality control by TRS MEDOR Online Odor Monitoring

    ontext & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® offers high meteorological solutions. Odors are very distinct air contaminants as they generate nuisances. The factors playing a...

    By Chromatotec Group based in Val de Virvée, FRANCE.

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    Phosphorimetric determination of uranium in water

    Introduction The presence of uranium in water causes radiological pollution as all uranium radionuclides decay by both alpha and gamma emissions. Chemical aspects of uranium toxicity include mainly nephritis and other renal diseases. Mentioned harmful features affect on humans even in low concentrations thus requiring sensitive analysis methods.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

  • Seawater Biotoxicity monitoring to protect the coastal waters of Italy

    The recorded death of fish in the river that flows out of the industrial zone of Scarlino has created the need of the installation of a biological alarm system. The decision was made to work with an automatic system, iTOXcontrol created by microLAN-The Netherlands represented in Italy by Ecotox Lds, which uses marine bacteria. The system compares the values of the light emission from these organisms at the entrance and exit of the canal, generating alarms in the presence of toxic substances.

    By microLAN B.V. - Aqualabo Group based in Waalwijk, NETHERLANDS.

  • Determination of Mercury in Water Samples by HG-AFS

    Mercury and its sompounds are highly toxic materials and can be transferred into the human body via water; the concentration of mercury in water generally is very low. With the superior sensitivity of Aurora`s Atomic Fluorescence Spectrometer, the LUMINA 3300, direct measurement of mercury in water sample is possible.

    By Aurora Biomed Inc. based in Vancouver, BRITISH COLUMBIA (CANADA).

  • Measurement solution for accurate continuous formaldehyde measurement formaldehyde in emissions and ambient air applications

    Formaldehyde (HCHO) is the simplest aldehyde species and is present, or generated by, many sources (both natural and industrial). It is classed as a substance that is toxic and harmful to human health.

    By Protea Limited based in Middlewich, UNITED KINGDOM.

  • XRF analysis for product testing & toy safety

    Each week brings a new report of problems with toy safety and consumer product safety. Ultimately, contract manufacturers, importers, distributors, retailers and brand owners all face potential liability when they fail to comply with laws which restrict the levels of toxic materials in their products. Handheld Niton analysers provide quick and easy screening of toys and other consumer goods for lead, cadmium, mercury and other toxic metals. Importers, brand owners and retailers can implement a standardised...

    By Niton UK Limited based in Woodmancott, Winchester, UNITED KINGDOM.

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