To assess the concrete surface absorption characteristics. The rate of flow of water per unit area into a concrete surface when subjected to a constant head of 200 mm is measured. The apparatus consist of :

§         Supplied with reservoir, capillary tube, scale and connection to cap

§         Supplied with cap for clamping on to smooth surface and  manufactured from clear plastic incorporated a rubber seal complete      with clamp mechanism.

§         Mounted on a stand complete with rubber tubing and cup

§         Bore glass tube 1.9mm diameter and 240mm long mounted on scale and support board

§         The scale on a support board reading in mm

§         Test specimen up to 150 mm concrete cube

§         The test cap for rough surface incorporated with knife edge contact