The way is now open for more widespread use of direct toxicity tests as a basis for toxicity-based consents. Samples of the industrial effluent are collected at source, for testing on the actual bacteria of the receiving activated sludge. The tests used are the Respiration Inhibition Test and the Nitrification Inhibition Test. Note that this approach mirrors that of the regulators of discharges to ...

ByStrathkelvin Instruments Limited based in North Lanarkshire, UNITED KINGDOM

Research Respirometer Equipment for Toxicity Testing

Objective: Certain constituents of the test waste were know to be biodegradable but were suspected of being toxic to aerobic biological processes when present in high concentrations. The objective was then to determine how much waste could be added to an activated sludge process before toxic impacts would be ...

ByChallenge Technology based in Springdale, ARKANSAS (USA)

vitro 3D Blood Brain Barrier for Brain Blood Barrier

Kirkstall’s Quasi Vivo® system aims to establish and optimise a human in vitro 3D Blood Brain Barrier (BBB) in an effort to identify important mechanistic pathways for successful biomarker analysis, drug delivery and toxicity ...

ByKirkstall Ltd. based in York, UNITED KINGDOM

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 ...

ByStrathkelvin Instruments Limited based in North Lanarkshire, UNITED KINGDOM

Waste water respirometry solutions for toxicity reduction tests

An alternative approach is to undertake toxicity reduction procedures, such as neutralisation or acid hydrolysis, in pilot-scale laboratory studies. The Respiration or the Nitrification Inhibition Test may be used for this. In the future, toxicity reduction may be stipulated by local authority, water company or publicly-owned treatment works prior to giving discharge consents. Toxicity reduction may be evaluated using toxicity ...

ByStrathkelvin Instruments Limited based in North Lanarkshire, UNITED KINGDOM

Research Respirometer Equipment for Pesticide Degradation

Measurement of oxygen uptake of the pesticides: carbaryl, carbofuran and aldicarb in samples seeded with microorganisms extracted from ...

ByChallenge Technology based in Springdale, ARKANSAS (USA)

ASTM D5580 Standard Test Method for Determination of Benzene, Toluene, Ethylbenzene, p/m-xylene, o-xylene, C9 and Heavier Aromatics, and Total Aromatics in Finished Gasoline by Gas Chromatography (GC).

Aromatics and ethers are added to gasoline to reduce carbon monoxide emissions and increase octane number. However, aromatics are toxic for health and environment. Test methods to determine benzene and the aromatic content of gasoline are necessary to ...

BySCION Instruments BV - Techcomp Group based in GP Goes, NETHERLANDS

Membrane Water Treatment and Monitoring Products for Drinking Water

Modern Water offers technologies that detect pesticides in source water. Drinking water protection and water quality are critical to human health. Utilising rapid screening technologies can provide quick and reliable results for assurance while saving costs over the traditional laboratory ...

ByModern Water based in Sand Hutton, UNITED KINGDOM

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Advanced oxidation water treatment solutions for toxic gases treatment sector

Semiconductor and LCD ...

ByESCO International (EI) based in Glan Conwy, UNITED KINGDOM

Enzymes for education

Lessons on chemistry, enzymes, water quality and more in the classroom or in the environment Our enzyme reagents and test kits are non-toxic and environmentally benign, meaning safe learning tools for your students, from elementary to graduate education. Our on-site nitrate test kits are especially great for beginners, as there is no necessary equipment required, and students can watch their samples turn pink from the nitrate. ...

ByNECi Superior Enzymes based in Lake Linden, MICHIGAN (USA)

Spectrophotometry for toxic waste industry

ByBuck Scientific Inc based in Ansonia, CONNECTICUT (USA)

Research Respirometer Equipment for Resting the Toxicity of a Cleaning Agent

METHOD: A seed culture from a full-scale anaerobic digester was placed in a number of 200 mL respirometer vessels. A synthetic wastewater having a 20,000 mg COD/L in a nutrient/ mineral/buffer solution was fed daily to each reaction vessel — along with various amounts of the cleaning agent The reactors were operated for a four day test period with measurement of gas production using a CHALLENGE ANR-200 anaerobic ...

ByChallenge Technology based in Springdale, ARKANSAS (USA)

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