You may also submit a request by e-mail. Be sure to include the business identification number, and the business name and address in the text of your message. If you write to PO Box 252, Trenton, NJ 08646-0252, please allow 15 to 20 working days to receive your certificate.e sure to include the business identification number, and the business name and address in the text of your message. If you write to PO Box 252, Trenton, NJ 08646-0252, please allow 15 to 20 working days to receive your certificate.
A) End expiration: At rest, intrapleural pressure must remain slightly negative (here it is shown as -5 mmHg) as i) the lung is elastic and has a tendency to collapse or shrink, and ii) the fluid lining the alveolar surfaces generates surface tension that works to collapse the lung.
The more common lung function values measured with spirometry are: 1  Forced vital capacity (FVC) . 2  Forced expiratory volume (FEV) . 3  Forced expiratory flow 25% to 75%. 4  Peak expiratory flow (PEF) . 5  Maximum voluntary ventilation (MVV) . 6  Slow vital capacity (SVC) . 7  Total lung capacity (TLC) . 8  Functional residual capacity (FRC) . 9  Residual volume (RV) . 10  Ex The amount of air you exhale may be measured at 1 second (FEV1), 2 seconds (FEV2), or 3 seconds (FEV3). 2  FEV1 divided by FVC can also be determined. 3  Forced expiratory flow 25% to 75%. 4  This measures the air flow halfway through an exhale.