For the peel test, a universal testing machine with a 100 N load cell and a hydraulic clamp is used. The test setup also includes a flat base plate on which the test specimen is placed. For preparation, lines are drawn on the shell of each specimen at 1-inch intervals using a permanent marker, and the implant is cut along these lines with a razor blade.

The test specimen is placed on the base plate in the testing machine, and one inch of the elastomeric shell is peeled away from the gel. The now free end of the shell is clamped in the machine’s hydraulic clamp and adjusted so that the force is evenly distributed across the cross-section of the specimen. The force is zeroed, and the elastomeric shell is pulled at a speed of 20 inches per minute.

The maximum force required to separate the shell from the gel is measured. The number of measurements per specimen depends on the surface area of the sample but should be at least two. The recorded maximum force values are then averaged.