Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 244 Protozoan Activated Sludge Inhibition Test written by OECD and published by OECD Publishing. This book was released on 2017-10-09 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes a method to assess effects of a test chemical on the phagocytotic activity of activated sludge containing protozoan organisms under defined conditions in the presence of different concentrations of the test chemical. The principle of biological sewage-treatment ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 209 Activated Sludge Respiration Inhibition Test Carbon and Ammonium Oxidation written by OECD and published by OECD Publishing. This book was released on 2010-07-23 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline is designed to assess the effects of a substance on micro-organisms from activated sludge of waste-water treatment plants by measuring their respiration rate (carbon and/or ammonium oxidation) as oxygen consumption. The test ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 246 Bumblebee Acute Contact Toxicity Test written by OECD and published by OECD Publishing. This book was released on 2017-10-09 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes a method to assess effects of a test chemical on the phagocytotic activity of activated sludge containing protozoan organisms under defined conditions in the presence of different concentrations of the test chemical. The principle of biological sewage-treatment ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 245 Honey Bee Apis Mellifera L Chronic Oral Toxicity Test 10 Day Feeding written by OECD and published by OECD Publishing. This book was released on 2017-10-09 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes a method to assess effects of a test chemical on the phagocytotic activity of activated sludge containing protozoan organisms under defined conditions in the presence of different concentrations of the test chemical. The principle of biological sewage-treatment ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Effects on Biotic Systems Summary of Considerations in the Report from the OECD Expert Group on Ecotoxicology written by OECD and published by OECD Publishing. This book was released on 2006-09-11 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 225 Sediment Water Lumbriculus Toxicity Test Using Spiked Sediment written by OECD and published by OECD Publishing. This book was released on 2007-10-15 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline is designed to assess the effects of prolonged exposure to sediment-associated chemicals on the reproduction and the biomass of the endobenthic oligochaete Lumbriculus variegatus (Müller). The method is described for static test ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 303 Simulation Test Aerobic Sewage Treatment A Activated Sludge Units B Biofilms written by OECD and published by OECD Publishing. This book was released on 2001-01-22 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes two simulations tests used in the aerobic sewage treatment. Activated Sludge Units are designed to determine the elimination and the primary and/or ultimate biodegradation of water-soluble organic compounds by aerobic ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 210 Fish Early life Stage Toxicity Test written by OECD and published by OECD Publishing. This book was released on 2013-07-26 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The test method described in this Test Guideline, is intended to define the lethal and sub-lethal effects of chemicals on the early life stages of the species tested. The early-life stages of fish are exposed to five concentrations of the test ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 302A Inherent Biodegradability Modified SCAS Test written by OECD and published by OECD Publishing. This book was released on 1981-05-12 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes a method which is an adaptation of the Soap and Detergent Association semi-continuous activated sludge (SCAS) procedure for assessing the primary biodegradation of alkyl benzene sulphonate. The test does not simulate ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 201 Freshwater Alga and Cyanobacteria Growth Inhibition Test written by OECD and published by OECD Publishing. This book was released on 2011-07-28 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this test is to determine the effects of a substance on the growth of freshwater microalgae and/or cyanobacteria. Exponentially growing test organisms are exposed to the test substance in batch cultures over a period of normally 72 ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 230 21 day Fish Assay A Short Term Screening for Oestrogenic and Androgenic Activity and Aromatase Inhibition written by OECD and published by OECD Publishing. This book was released on 2009-09-08 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes an in vivo screening assay for certain endocrine active substances where sexually mature male and spawning female fish are held together and exposed to a chemical during a limited part of their life-cycle (21 days ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 204 Fish Prolonged Toxicity Test 14 Day Study written by OECD and published by OECD Publishing. This book was released on 1984-04-04 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline presents guidance for measurement of lethal and other observed effects in fish exposed to test substances. It may be used in place of Test Guideline 203 if a longer observation period is considered useful and appropriate and the ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 212 Fish Short term Toxicity Test on Embryo and Sac Fry Stages written by OECD and published by OECD Publishing. This book was released on 1998-09-21 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this Short-term Toxicity Test on Fish Embryo and Sac-Fry Stages, the life stages from the newly fertilized egg to the end of the sac-fry stage are exposed. The embryo and sac-fry stages of fish are exposed to five concentrations of the test ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 203 Fish Acute Toxicity Test written by OECD and published by OECD Publishing. This book was released on 2019-06-18 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fish are exposed to the test substance preferably for a period of 96 hours. Mortalities are recorded at 24, 48, 72 and 96 hours and the concentrations which kill 50 per cent of the fish (LC50) are determined where possible. One or more species ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 301 Ready Biodegradability written by OECD and published by OECD Publishing. This book was released on 1992-07-17 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes six methods that permit the screening of chemicals for ready biodegradability in an aerobic aqueous medium. The methods are: the DOC Die-Away, the CO2 Evolution (Modified Sturm Test), the MITI (I) (Ministry of ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 217 Soil Microorganisms Carbon Transformation Test written by OECD and published by OECD Publishing. This book was released on 2000-01-21 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes a laboratory test method designed to investigate long term potential effects of a single exposure of agrochemicals/non agrochemicals on carbon transformation activity of soil microorganisms. A minimum of two test ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 232 Collembolan Reproduction Test in Soil written by OECD and published by OECD Publishing. This book was released on 2016-07-29 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline is designed for assessing the effects of chemicals on the reproduction of collembolans in soil.