Yes, the GenElm Series requires a compressed air supply for its pneumatic clamping system. The air pressure ensures that every sample is held with the same force before the pendulum is released, which removes operator variability and makes the test more reliable.

A standard laboratory air line is usually enough to run the system. Stable pressure is important, since uneven or weak airflow can affect how well the clamps secure the specimen. With proper air support, the instrument maintains consistency across multiple tests, which is a must for both quality control and research environments.

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