Abstract: A composition for use as a sport or recreational surface includes about 88 to 90 percent by weight of a sand blend that is formed of at least three different sands mixed together, the sand blend including a first sand that is represents a majority by weight of the sand blend and has a clay/silt content of at least 1% by weight; about 5-7 percent by weight of a hydrocarbon wax; at least about 2 percent by weight of polymeric material; and at least about 3 percent by weight of rubber, the percentage by weight of each ingredient being based on the total weight of the composition.

Abstract: In another embodiment, a composition for use as a sport or recreational surface includes about 88 to 90 percent by weight of a sand blend that is formed of at least three different sands mixed together, the sand blend including a first sand that is represents a majority by weight of the sand blend and has a clay/silt content of at least 1% by weight; about 5-7 percent by weight of a hydrocarbon wax; at least about 2 percent by weight of polymeric material; and at least about 3 percent by weight of rubber, the percentage by weight of each ingredient being based on the total weight of the composition.

Abstract: This invention relates to a biocide material to inhibit the growth of micro-organisms in an aqueous solution, a device comprising such a material, and a method of preparation of such a polymeric material. The biocide material of the invention comprises a water-insoluble polymeric support on which a biocide is immobilized, the water content of the material being between 30 and 60% by weight of the material.

Abstract: A biocidal material comprises a biocide immobilized on a support characterized in that the biocide has a log P value of at least 1.5, the support has a hydrophobic surface and the biocide is immobilized on the hydrophobic surface by a hydrophobic exclusion mechanism. The material can be used for inhibiting bacterial growth in an aqueous medium e.g. the wash water of a photoprocessing system. The material can be housed in a flow-through container.

Abstract: A method of preparing a biocidal material comprises taking a biocidal material comprising a biocide having a log P value of at least 1.5 immobilized by hydrophobic exclusion on a support having a hydrophobic surface which has been used for inhibiting microbial growth in an aqueous medium, extracting the biocide from the biocidal material with a solvent, and immobilizing the extracted biocide by hydrophobic exclusion on a support having a hydrophobic surface.

Abstract: A method for inhibiting the growth of microorganisms in an aqueous medium comprises contacting the aqueous medium with a permeable body comprising material which interacts with the microorganisms. Such interaction involves a change in the chemical structure of the material resulting from the action of one or more of the microorganisms. The permeable body may take the form of a permeable bag containing plant fibers and may be used for the treatment of photoprocessor wash waters.

Abstract: A method of inhibiting microbial growth in wash water contained in a photoprocessing system. The method comprises placing in the wash water an apparatus comprising a pump with an attached permeable container and an inlet and outlet means for the wash water. The permeable container includes a biocide immobilized on a support. The wash water as it is pumped through the pump passes through the container and makes contact with the immobilized biocide in order to inhibit microbial growth in the wash water. The apparatus is self-contained and may be placed in a reservoir of an aqueous medium to be treated.

Abstract: A method of inhibiting microbial growth in an aqueous medium comprising contacting the aqueous medium with a biocidal material comprising a biocide having a log P value of at least 1.5 immobilized by hydrophobic exclusion on a support having a hydrophobic surface, characterized in that contact is made in the presence of a potentiating agent for the biocide.

Abstract: A biocidal material comprises an organic biocide immobilised on a polymeric support characterised in that the support is water-insoluble and the biocide is covalently bound to the support by a hydrolytically stable covalent linkage. The material can be used for inhibiting bacterial growth in an aqueous medium e.g. the wash water of a photoprocessing system. The material can be housed in a flow-through container.

Abstract: A biocidal material comprises an organic biocide immobilized on a polymeric support characterized in that the support is water-insoluble and the biocide is covalently bound to the support by a hydrolytically stable covalent linkage. The material can be used for inhibiting bacterial growth in an aqueous medium e.g. the wash water of a photoprocessing system. The material can be housed in a flow-through container.

Abstract: A biocidal material comprises a biocide immobilized in a porous inorganic polymer network such as a sol-gel matrix. The polymer may be coated on an inorganic support. The material can be used for inhibiting microbial growth in an aqueous medium, e.g., the wash solution of a photoprocessing system. The material can be housed in a flow-through container.