red phosphor powder for CFLs

1. Visible mechanical impurity is not allowed inside the powder; 2. No remains through Screen 350mesh/cm; 3. Density: d≤5.15g/cm3; 4. Median particle diameter: d50≤6.0μ; 5. Relative luminosity:≥100% of the standard sample; 6. Main peak wavelength of the emitting spectrum: 611nm; semi-width of the spectrum band 62nm; 7. Color coordinate: x=0.650, y=0.345