Index                           MIN          MAX   
Penetration rate (Darcy)             4.6            6.0 

Filter-cake density, g/cm³                    0.33                 0.39

+150 M, %                       4.0            20.0

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