We only use select additives, which are compliant with the strictest quality standards, when processing our substrates. We only use gramofibre®, perlite, clay, wood, coco products, bark humus, substrate compost, sand, various mineral components, high-grade fertiliser, and our newest product gramoXchange® as additives in our mixtures. We base the quality inspection of our substrate additives on the minimum standards defined by the 'Deutsche Gütegemeinschaft Substrate für Pflanzen e.V.' (Quality Assurance Association Growing Media for Plant Cultivation).
Association Growing Media for Plant Cultivation). Continual optimisation and development of our products is our highest priority. The intensive research and testing of our various additives has allowed Gramoflor to establish itself as a long-term partner for its customers, bringing them new innovative solutions on a regular basis.