A method and apparatus for heat stress testing medicament aerosol
inhalation devices, such as a metered dose inhaler, is described. An
electrical induction work coil is used to heat the inhalers to 55.degree.
C..+-.5.degree. C. Heated inhalers are subsequently weighed to detect and
reject nonconforming inhalers where a nonconforming amount of propellant
has leaked.