index

appearance

loose flow powder or particle

drying loss, %

≤

7.0

weight of screen residue(0.25mm), %

≤

10.0

water insoluble, %

≥

80.0

apparent viscosity rising value, mPa.s

≤

3.0

Lubrication coefficient reduction rate, %

≥

60

floescence level a; level

≤

4

a florescence level index is only for drilling fluid