Since 1941, Wabash MPI has become a leading international supplier of standard and custom presses for aerospace, medical, recreation, automotive, energy, education, ASTM and rubber & plastics testing, R&D laboratory & other applications. They also have a dedicated testing laboratory for application testing and development to determine press specifications. For over 100 years, Carver hydraulic presses have set the standard for laboratories around the world. Here you'll find the widest array of standard choices for nearly any application. Our standard laboratory presses include two-column and four-column, benchtop and floor standing; manual and automatic presses. They have a complete line of laboratory press accessories. Rosin extraction.