Supports the following standards: AASHTO T245, PTM705 This compactor automatically compacts samples at a preset number of hammer blows and shuts off at completion. The AD model complies with ASTM D6926-16 and provides a speed of 64 blows per minute. The BD model provides a speed of 55 blows per minute. The compactor features a stationary base with flat-foot hammer. Unit includes mechanical compactor, automatic counter, ASTM-compliant oak compaction pedestal, (1) hammer and (1) H-1341A mold assembly. Additional mold and hammer assemblies are recommended for efficient testing operations, allowing you to preheat multiple molds and hammers to speed testing.