Index                           MIN          MAX   
Penetration rate (Darcy)             6.0            8.0 

Filter-cake density, g/cm³                     ---                  0.39

+150 M, %                       4.0            25.0

PH                               8.0             11.0     

Physical & Chemical Index

Color                                      white

State                                       powder

Raw material                                diatomite     

Grade                                      Flux calcined

Real Density                                 2.0-2.3

Ignition loss,%                                <2.0

SiO₂, %                                      >85.0

Al₂O₃, %                                     <4.0  

Fe₂0₃, %                                     <1.5