Evaluation (Validation and Verification) - Medical Device Design: Innovation from Concept to Market - page 218

Environmental chambers are available in a variety of sizes from desktop to those taking up a
whole car ( Figure 9.5 ). They can also vary in range and can take temperatures from −40 to
+40°C; they can also go from arid to 100% humidity.
9.3.2.5 Normal Use
Apart from extreme use cases, does the device last its design life under normal, average
operating conditions? Can the packaging withstand normal transportation? All of the test
regimes describe above can be used to examine this aspect of the life cycle.
Figure 9.4
Desktop tensile/compression testing machine. (Courtesy Staffordshire University)
Figure 9.5
Typical environmental chambers: (a) small scale; (b) large scale.