The 3400 Series Universal Testing Machines range in capacity from 500 N to 50 kN and are designed to meet all of your force testing needs. Instron’s patent-pending Operator Protect system architecture makes the 3400 Series simpler, smarter, and safer than ever before. Designed to perform tensile, compression, flex, peel, puncture, friction, shear tests, and more, these systems are compatible with hundreds of grips and fixtures found in our expansive accessory catalog.