Standard compressive measurement instruments are not capable of low loads and fail to provide adequate depth data for soft foam materials. Therefore Nanovea Nano or Microindentation mode provides the ability to precisely measure the compressivity of soft foam materials. Measuring depth versus load during the compression and decompression allows calculation of both hardness and elastic modulus.
APPLICATION NOTE: http://www.nanovea.com/Application%20Notes/compressionmeasurement.pdf