COMPOSITION: ALVEOLAR EFFUSIVE ROCK WITH OPEN CELLSThe material is essentially an effusive magmatic mineral (originating from the Vulsini volcano during the Pleistocene period) calcined at high temperatures. It is porous, lightweight, and insulating. This is a finished product with a fine texture, free of toxic substances or weed seeds. IDEAL FOR: Growth substrate for root systemsDrainage substrate for sports fields (football, tennis, etc.)Stabilizing drainage substrate for clayey soilsMulchingPreparation of soil mixesCultivation of potted plants, orchids, succulents, cacti, carnivorous plants, bonsaiThermal and acoustic insulationSoil amendmentSubstrate for aquariums PHYSICO-CHEMICAL PROPERTIES: Water retention: 8-13% by volumeWater availability: 6-9% by volumepH: 7-8CEC (Cation Exchange Capacity): approx. 18 milliequivalents/100 gNo active limeNON-TOXIC product (free from silicate dust) FUNCTIONAL PROPERTIES: This material is especially recommended for drainage systems, making it ideal for lawns, sports landscaping, and construction technologies: Example: DIN standards in all variationsSTRI standardsUSGA drainage applicationsUses in reinforced drainage systemsVertical drainage applications AVERAGE CHEMICAL ANALYSIS (Performed on representative samples from the quarry) Material at quarry moisture level (approx. 5% moisture factor) GRAIN SIZE: 3-5 mm This mineral is a natural product. Therefore, the data mentioned above are approximate and do not provide any kind of guarantee.