Testing the Filled Containers

1. Leaks 2. Weakness in the valve assembly or container 3. Proper function s of the valve 4. The valve discharge rate - determine by discharging a portion of the contents of a previously weighed aerosol during a given period of time, and calculating, by the difference in weight, the grams of contents discharged per unit of time. 5. Particle size distribution of the spray 6. For accuracy and reproducibility of dosage when using metered valves