SensidyneAir Flow Indicator Kit includes 10 No. 5100 smoke tubes, an aspirator bulb, tube caps and a carrying case. Kit is ideal to test for a proper fit for workers needing respirators. It uses an easy-to-use aspirator bulb to render the test substance in a consistent and precise manner, 6 bulb compressions per min is equal to 200 ml. It performs fit testing for a low cost per test and no need of awkward hoods or test enclosures. Kit is virtually maintenance free and meets OSHA 29 CFR 1910.134 respiratory protection standard.