Bitrex Fit Test Kits no checkout pocket size design pocket size design streamlined design for exceptional worker acceptance Exclusive over molded lens offers greater field of vision Lighter weight for superior all day comfort Less cost and easy maintenance with very few replacement parts Stand away head harness for easy donning and doffing poly coated hood with clear viewing window Offers testing for disposable and reusable dust and mist respirators Bitrex creates an unmistakable bitter taste that indicates breakthrough on the respirator fit New disposable glass ampules make pouring solution into nebulizers easier and reduce the chance of contamination Reusable