Items

Requirements

Appearance

White free flow powder

White content %

≥90

Moisture content  %

≤0.3

Hydrochloricacidundissolved substance  %

≤1.0

    Base mud

Ability of bridge blinding S

≥300

Initial losses ml

≥150

Ability of reduction of water defeat ml ml

≥50

API water loss

≥100

Base mud plus 4%QS-4

Ability of bridge blinding S

≤30

Initial losses ml

≤5.0

Ability of reduction of water loss ml

≤8.0

API water loss

≤20.0