| ≥1 piece |
|
26 silica SiO2
Standard: FCC-1983 |
|
|
Assay （ SiO2 ）
|
≧ 94.0%
|
|
As
|
≤0.0003%
|
|
Heavy metals (as Pb)
|
≤0.003%
|
|
Loss on drying
|
≤7.0%
|
|
Loss on ignition
|
≤8.5%
|
|
Sulifate (as Na2SO4)
|
≤5%
|
|
Screen residue （ 325 MESH ）
|
≤5%
|
|
PH volume
|
6.0---7.5
|
|
Conclusion
|
The specification conforms with FCC--1983
|