It encompasses both a flexible user interface and a powerful instrument controller.” WinTest® is a high-performance software package that is used to operate all TA ElectroForce mechanical test instruments. ElectroForce Mechanical Testing Brochures.Thermal Conductivity & Diffusivity Brochures.TestBench and Planar Biaxial Test Instruments.ElectroForce Mechanical Test Instruments.Optical Platform (Dilatometer, Fleximetry, Microscope).High Pressure Thermogravimetric Analyzers.