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This Test Guideline describes a laboratory test method to assess abiotic hydrolytic transformations of chemicals in aquatic systems at pH values normally found in the environment (pH 4 – 9). This Guideline is designed as a tiered approach; each tier is triggered by the results of the previous...
Persistent link: https://www.econbiz.de/10012441941
with reconstituted water and equilibrated as appropriate. Groups of control worms are held under identical conditions. The …, the worms are transferred to a sediment-water-system free of test substance. This second phase is terminated when either …
Persistent link: https://www.econbiz.de/10012442038
studies performed with the substance (normally the rat, a minimum of 4 animals of one sex for each dose). Initial estimation …
Persistent link: https://www.econbiz.de/10012442261
This Test Guideline describes the determining of the ultraviolet-visible (UV-VIS) absorption spectrum of a chemical compound to have some indication of the wavelengths at which the compounds may be susceptible to photochemical degradation. Degradation will depend upon the total energy absorbed...
Persistent link: https://www.econbiz.de/10012443900
addresses the daily oral administration, by gavage, (in the diet, in drinking water or by capsules) of the test substance. When …. The results of this study include measurements (weighing, food /water consumption), functional tests, and, at least, daily …
Persistent link: https://www.econbiz.de/10012444558
This Test Guideline includes two methods: a paper contact toxicity test and an artificial soil test. The recommended specie is Eisenia foetida (Michaelsen). The initial screening test (filter paper contact test) involves exposing earthworms to test substances on moist filter paper in order to...
Persistent link: https://www.econbiz.de/10012445618
(Myriophyllum spicatum) growing in water-sediment system. Shoot apices of healthy and non-flowering plant are potted in standardised …
Persistent link: https://www.econbiz.de/10012448789
This Test Guideline is designed to assess the toxicity of chemicals on the growth of submerged aquatic plants Myriophyllum spicatum growing in a sediment-free test system. In a modified Andrews’ medium Myriophyllum spicatum plant cultures are exposed to at least five different concentrations...
Persistent link: https://www.econbiz.de/10012448807
gross output and value-added by industry and national accounts main aggregates of demand and trade, and supplemented by …
Persistent link: https://www.econbiz.de/10013527269
gross output and value-added by industry and national accounts main aggregates of demand and trade, and supplemented by …
Persistent link: https://www.econbiz.de/10013527321