Pore Structure  FER
Pore Size(nm)  0.5 - 0.6
SiO2/Al2O3  10 - 20, 20 - 40, 40 - 60  
Relative Crystallinity(%)   >= 95
Na₂O weight(%)  <= 0.1
Loss on Ignition(%)  <= 5 

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All Molecular sieves