该装置由活塞在容器中密封挤压，将样品通过底盘孔压出到收集器中，从而测试样品的质地特性。Consistency of moisturising cream can be assessed by either a forward extrusion test (simulating the force required to extrude a sample by the consumer) or a backward extrusion test which will give an indication of product physical failure and viscosity.