Quantitative fit testing is the preferred testing method. The ambient aerosol condensation nuclei counting (CNC) method, using a Portacount® Plus instrument, has been selected as the quantitative fit ...

We often hear about LFT (Liver Function Test) for the liver and KFT (Kidney Function Test) for the kidneys. Similarly, there’s a lesser-known but equally important test called the PFT (Pulmonary ...