FOCUS PEARL and GeoPEARL use the Interbase Database Management System, which is installed as part of the (Geo)PEARL installation. Users can use Interbase free during the first 90 days, but they have to ask for a so-called deployment licence thereafter. The registration fee will be covered by the PEARL team, so registration is free of charge for the user. To get a free deployment license, you have to register as a (Geo)PEARL user.
Download FOCUS PEARL
Download the most recent version of FOCUS PEARL from the FOCUS PEARL website. Following recommendations of the FOCUS working group on version control, this is the only place where you can download the model.
The current FOCUS PEARL version is FOCUS PEARL version 3.3.3.
Download the GUI version of GEOPEARL
Download the GeoPEARL model from the PEARL website. Following recommendations of the GeoPEARL working group on version control, this is the only place where you can download the model. This version should be used when submitting a registration dossier.
Download the CONSENSUS version of PEARL
Download the LINUX version of PEARL
Download the ASCII version of GEOPEARL
Download the ASCII version of the GeoPEARL model from the PEARL website. Following recommendations of the GeoPEARL working group on version control, this is the only place where you can download the model. As described in the manual, there are two versions available, i.e. a version with a graphical user interface and an ASCII version.
The ASCII version should only be used by experienced users; it can be used for grid computing. Please refer to the manual for further details. You can also download the map with the unique combinations (or plots) here.
Download the PEARL 1 to PEARL 2 converter
FOCUS PEARL 2.2.2 uses Interbase as a database system instead of Microsoft Access 97. Advantage is that the system is no longer dependent on specific Office versions. However, old databases must be transferred via a separate software tool, i.e. "PEARL 1 to 2 Converter". This tool can be downloaded here.
Download PEARLNEQ Version 5
In the PEARL context, a compound residing in the non-equilibrium domain is not subject to transformation, which implies that the half-life of transformation refers to the equilibrium domain only. An important consequence is that the transformation half-life, which usually refers to the total mass content, should be obtained in a special procedure. The PEARLNEQ program can be used to obtain the half-life at reference temperature, the equilibrium sorption coefficient, the desorption rate coefficient, and the non-equilibrium sorption coefficient in the case of sorption/desorption kinetics. If the incubation experiment has been carried out at multiple temperatures, the molar Arrhenius activation energy can be optimized simultaneously.
Differences with PEARLNEQ v4 are:
- An option is offered to define the transformation half-live on the basis of the concept that the transformation rate is proportional to the amount of substance in the liquid phase.
- The equilibrium sorption coefficient has become a parameter that is optimised.
- More than one data set (i.e. up to nine replicate sets) can be used in the optimisation process.
Differences with PEARLNEQ v5 are:
- A small bug in PearlMake of PEARLNEQ v5 was fixed. In case the first observation was found on day 3 or later, the PEST instruction file(s) made by PearlMake was(were) not correct. This is fixed in PEARLNEQ version 5.1
PEARLNEQ Version 5.1
PEARLNEQ Version 4
Other documents can be downloaded here.
To read the manuals, you need the Acrobat Reader, which can be downloaded for free from the adobe site.