You are downloading a "preliminary version" of this computer-based tool. Its use requires a minimum knowledge and expertise using Microsoft Excel. This utility will produce an estimate of the time needed to reach a CO concentration equivalent to the STEL value (occupational exposure level in effect in Quebec) or the IDLH if equipment similar to that included in the list is used in a room where there is mechanical or natural ventilation. Coming soon, a final version will be available. Your comments are welcome and much appreciated.
Interactive Tool: Downloadable Version
To download the Excel file (907K)