Quantitative respiratory fit testing is an accurate and precise method of mask fitting, using the TSI Portacount. Big Hearts First Aid has the equipment and skilled technicians able to test on 3M full & half, Scott AV 2000 and 3000, MSA, Drager, Survivair, and North full & half mask. Fit testing is the evaluation of a suitable fit to a particular respirator. Individuals required to donne a respirator are required to have a fit test performed at least once every 2 years to ensure worker safety. However, it is recommended to fit test employees annually. Fit testing is conducted in accordance with Z94.4-11 Selection, Use and Care of Respirators and is conducted to ensure that the employee is wearing the proper respirator size and model. 
Mask Fit Testing
