This web page contains the most up-to-date versions of all PC based software for use with Crompton Instruments products. Simply select the required software from the drop-down menu. The file downloads are in self-extracting EXE or ZIP format depending on the size. Installing an EXE file: When prompted, please select open which will automatically commence the installation process. Installing a ZIP file: When prompted, please select open which will open the files using a Winzip program. (You may require a copy of Winzip or a similar package in order to do this). Select the file named setup.exe from within the Zip folder and run this to commence the installation process.