This expert technical advisor will help you estimate a service life for respirator cartridges. The advisor will give you a series of choices and ask for several pieces of information. Select the choices and enter the information that best describes your workplace and worst-case working conditions. The advisor will use your selections to calculate a service life based on theories developed by Gerry Wood.

Remember that there are many variables which can influence respirator service. Therefore, you should use the result from this advisoras initial guidance, not to guarantee compliance with OSHA regulations.

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