ETX 1.3a: A program to calculate confidence limits for hazardous concentrations based on small samples of toxicity data
Average rating
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item.
When enough users have cast their vote on this item, the average rating will also be shown.
Star rating
Your vote was cast
Thank you for your feedback
Thank you for your feedback
Authors
Aldenberg TSeries/Report no.
RIVM Rapport 719102015Type
ReportLanguage
en
Metadata
Show full item recordTitle
ETX 1.3a: A program to calculate confidence limits for hazardous concentrations based on small samples of toxicity dataTranslated Title
[ETX 1.3a: Een computerprogramma voor het berekenen van betrouwbaarheidsgrenzen voor schadelijke concentraties, op basis van kleine steekproeven van toxiciteitsgegevens.]Publiekssamenvatting
ETX (EcoToX) is a computer program for MS-DOS computers for the extrapolation of laboratory toxicity data to environmental concentrations that are safe for the majority of the biological species. It is based on the theory of Van Straalen and Denneman (1989), as modified by Aldenberg and Slob (1993). The estimates of the so-called Hazardous Concentrations can be given on two levels of confidence: a median estimate that in the long run will equally often overestimate, as well as underestimate, the true HC5 (95% species protection), and a 95% confidence underestimate that is almost surely on the safe side. Data can be entered interactively in ETX and saved to files. One can also compose data files with a text editor and read them in with ETX. Next to the computation of Hazardous Concentrations, one can calculate the hazard to the biological community at given levels of exposure, i.e. environmental concentrations. All results can be saved to files, for later printout, or study.Collections