The section describes Biotic Ligand Models and their use in risk assessment, as well as the development of the bio-met bioavailability tool (user-friendly BLM) and supporting tools.

User guide

Bio-met User Guide 4.0. The bio-met manual has been updated together with the release of Bio-met v4.0.

Hardness conversion tool

Hardness conversion tool. The bio-met hardness conversion tool can also be downloaded as a Microsoft Excel 2007 spreadsheet. This tool can be used to convert water hardness values (i.e. calcium carbonate concentrations) to calcium concentrations.


Poster SETAC 2017, a poster  on Bio-met v4.0 presented at SETAC Europe 2017 in Brussels (May 2017).

Poster on bioavailability

Workshop report on metal bioavailability under the Water Framework Directive

Technical guidance to implement bioavailability (April 2015)