Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 221 Lemna sp Growth Inhibition Test written by OECD and published by OECD Publishing. This book was released on 2006-07-11 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline is designed to assess the toxicity of substances to freshwater aquatic plants of the genus Lemna (duckweed). Exponentially growing plant cultures of the genus Lemna (Lemna gibba and Lemna minor usually) are allowed to grow as ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 239 Water Sediment Myriophyllum Spicatum Toxicity Test written by OECD and published by OECD Publishing. This book was released on 2014-09-26 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline assesses the toxicity of chemicals on the growth of the rooted aquatic plants (Myriophyllum spicatum) growing in water-sediment system.

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 238 Sediment Free Myriophyllum Spicatum Toxicity Test written by OECD and published by OECD Publishing. This book was released on 2014-09-26 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline assesses the toxicity of chemicals on the growth of submerged aquatic plants Myriophyllum spicatum growing in a sediment-free test system.

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 202 Daphnia sp Acute Immobilisation Test written by OECD and published by OECD Publishing. This book was released on 2004-11-23 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes an acute toxicity test to assess effects of chemicals towards daphnids (usually Daphnia magna Staus). Young daphnids, aged less than 24 hours at the start of the test, are exposed to the test substance at a range of ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 208 Terrestrial Plant Test Seedling Emergence and Seedling Growth Test written by OECD and published by OECD Publishing. This book was released on 2006-08-17 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline is designed to assess effects on seedling emergence and early growth of higher plants following exposure to the test substance applied to the soil surface or into the soil. Seeds are placed in contact with soil treated with the ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 223 Avian Acute Oral Toxicity Test written by OECD and published by OECD Publishing. This book was released on 2016-07-29 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes procedures designed to estimate the acute oral toxicity of substances to birds, and it provides three testing options: (1) limit dose test, (2) LD50-slope test, and (3) LD50-only test. The LD50-slope and LD50-only options are sequential testing procedures.

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 227 Terrestrial Plant Test Vegetative Vigour Test written by OECD and published by OECD Publishing. This book was released on 2006-08-17 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline is designed to assess effects on vegetative vigour of terrestrial plants following above-ground exposure by general chemicals, biocides and crop protection products. The test can be conducted in order to determine the ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 224 Determination of the Inhibition of the Activity of Anaerobic Bacteria Reduction of Gas Production from Anaerobically Digesting sewage Sludge written by OECD and published by OECD Publishing. This book was released on 2007-01-25 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes a method, which can provide information that is useful in predicting the likely effect of a test substance on gas production in anaerobic digesters. Aliquots of a mixture of anaerobically digesting sludge (20 g/L to 40 ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 240 Medaka Extended One Generation Reproduction Test MEOGRT written by OECD and published by OECD Publishing. This book was released on 2023-07-04 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes the Medaka Extended One Generation Test (MEOGRT), which exposes fish over multiple generations to give data relevant to ecological hazard and risk assessment of chemicals, including suspected endocrine disrupting chemicals (EDCs). Exposure in the MEOGRT starts with ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 211 Daphnia magna Reproduction Test written by OECD and published by OECD Publishing. This book was released on 2012-10-02 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The test method described in this Test Guideline assesses the effect of chemicals on the reproductive output of Daphnia magna Straus. To this end, young female Daphnia are exposed to the test substance added to water at a range of concentrations (at ...

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 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 237 Honey Bee Apis Mellifera Larval Toxicity Test Single Exposure written by OECD and published by OECD Publishing. This book was released on 2013-07-26 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline (TG) describes a honey bee brood acute toxicity test under laboratory conditions. The method aims at the determination of the lethal dose (72-h LD50) following single exposure of larvae to a chemical. On day 1 (D1) of the study ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 214 Honeybees Acute Contact Toxicity Test written by OECD and published by OECD Publishing. This book was released on 1998-09-21 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline is a laboratory test method, designed to assess the acute contact toxicity of pesticides and other chemicals to adult worker honeybees. Anaesthetized adult worker honeybees are exposed to five doses in a geometric series of the ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 231 Amphibian Metamorphosis Assay written by OECD and published by OECD Publishing. This book was released on 2009-09-08 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes an amphibian metamorphosis assay intended to screen substances which may interfere with the normal functioning of the hypothalamo-pituitary-thyroid axis. The assay was validated with the species Xenopus laevis, which is ...

Download or read book OECD Guidelines for the Testing of Chemicals Section 2 Test No 235 Chironomus sp Acute Immobilisation Test written by OECD and published by OECD Publishing. This book was released on 2011-07-28 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes an acute immobilisation assay on chronomids and is designed to complement existing Test Guidelines for chironomid chronic toxicity assays (TG 218, 219 and 233). The test method is based on TG 202: Daphnia sp. Acute ...

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 ...