Each situation must be evaluated independently to ensure an appropriate selection. While this may seem to be a daunting task, it need not be difficult if approached as a process of elimination. Given what is known about the factors listed above and any other factors that may be relevant, one can begin by considering the various types of respirators and discounting those that obviously don’t meet the needs or performance requirements of the situation. Of those that remain, some judgement may be needed to select the ones that are more suited to the job. From the final candidates, a choice can be made for the respirator that best fits the employee and meets the employee’s comfort expectations