Our HCH Series core holders are standard Biaxial, or Hydrostatic, type core holders. Biaxial type core holders are defined as core holders that have common radial and axial pressure applied to the core sample. These core holders are routinely used for gas and liquid permeability and other core flooding experiments. They are often used for the testing of unconsolidated core samples. This style is recommended for full diameter core samples and high temperature applications. This design is more compact and the overall weight of the core holder is less than other models. This design also allows the same core holder to be used to test multiple core diameters.