Glass fibers used as substrates for soilless culture

Details Glass fibers used as substrates for soilless culture Glass fibers used as substrates for soilless culture

A - Human Necessities

01

G

A01G 31/00 (2006.01)

Patent

CA 2098705

2098705 9307741 PCTABS00162 La présente invention concerne des fibres de verre destinées à être utilisées comme constituants pour un substrat de culture hors-sol, leur composition comprenant essentiellement les constituants suivants dont les proportions sont exprimées en pourcentage pondéral: SiO2 55 - 70 %, Al2O3 1 - 8 %, CaO 5 - 9 %, MgO 1,5 - 4 %, Na2O 13 - 18,5 %, K2O 0,5 - 10 %, Fe2O3 0 - 4 %, ZnO 0 - 4 %, MnO 0- 4 %, TiO2 0 - 4 %, P2O5 0 - 4 %, impuretés < 1 %, dont la somme des teneurs en B2O3, Li2O et F est inférieure ou égale à 1 %.

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