A major consideration for safe extended use has been that the respirator should maintain its fit and function. Several workers in other available industries in a routine manner would use N95 Mask Singapore for several hours interruptedly. Experience in these settings would indicate that respirators could function within their design specifications for approximately 8 hours continuously or intermittently.
Several healthcare workers have been test subjects to various researches and several of those subjects have successfully worn N95 respirators at work for a significant length of time prior to actually removing them. Therefore, the maximum length of continuous use of the respirator mask would be in non-dusty healthcare workplaces.