Nextteq’s OSHA-compliant VeriFit Irritant Smoke Generator has a patented plastic design that integrates all the components of a traditional respirator fit testing kit into one convenient device. The plastic construction is a safe alternative to irritant smoke test kits that contain glass tubes. Its small bellows size provides the optimum amount of smoke for fit testing while minimizing the risk of overexposure.Nextteq, LLC, Tampa, FL.