Physicochemical properties of latex foam compounds with zeolite: Variation of Indentation hardness of zeolite incorporated latex foam with the zeolite dosage is given in Fig.3. Results showed that indentation hardness, increased up to 8% zeolite dosage in the foam. The hardness of latex foam was influenced by the geometry of the cores, spacing and configuration in relation to each other. It was shown that the indentation hardness, increased with the incorporation of adsorbent due to lack of free space in foam, which decrease the amount of air in the foam structure. However, beyond the above dosage the hardness decreased may be due to the phase separation which leads to a collapse in foam structure.