Software Updates

May 2001: The EPI Suite is now available from the U.S. Environmental Protection Agency via free Internet download from the following web-page: www.epa.gov/oppt/exposure/docs/episuitedl.htm

Syracuse Research Corporation is still selling "derivative" forms of the EPI Suite programs (DLL versions, source code licenses, Internet versions) ... for additional information, please contact Bill Meylan at meylan@syrres.com or Dr. Philip Howard at howardp@syrres.com.

November 2000 - Bug Notice - a problem was discovered in the Level III Fugacity Model regarding incorrect interpretation of negative numbers being transferred from the Ultimate Biodegradation module (BIOWIN) ... negative numbers were being interpreted as positive numbers. This problem only affected extremely recalcitrant estimations from the Ultimate Biodegradation module ... the effect in the Level III model was to shorten the estimated soil-water-sediment half-lives and lessen the overall persistence times. An updated Level III Model file can be downloaded from the Updates Page.

June 2000 - The PHYSPROP Database has been updated significantly with new experimental data (melting pt, boiling pt, water solubility) and new records ... PHYSPROP now contains nearly 25,250 chemicals.

Mar 2000 - BIOWIN has been upgraded to v4.00. Two new predictive models have been added for the MITI screening test.

Oct 1998 - Bug Notice: We have discovered, through various user reports and testing, that EPI (and most of the individual estimation programs) can "crash" under specific conditions on some computers. The "crash" (program stops working) can be duplicated as follows:

(1) Run a Calculation and have the Structure Window depicting the structure.

(2) Minimize the Structure Window.

(3) Run another Calculation with the Structure Window minimized ... crash!

The simply work-around is: Do Not Minimize the Structure Window! Either close it or leave it (it can moved anywhere on the screen).