Speci- fication brand No appearancegrammolereplacementvalue(m.s)moisture(%)indissolubilityperviousnessof lightNDJ-1 rotary viscometermpa.s2%20 water solutionviscosityrangespindleNO.rotary speedof spindleTF-500S powder1.8-2.0<6<0.5≥80200-450130TF-1000S powder1.8-2.0<6<0.5≥80800 1200212TF-6000S powder1.8-2.0<6<0.5≥804000 7000312TF-10000S powder1.8-2.0<6<0.5≥808000 1200036TF-15000S powder1.8-2.0<6<0.5≥8013000 1700036TF-20000S powder1.8-2.0<6<0.5≥8018000 24000412TF-30000S powder1.8-2.0<6<0.5≥8026000 34000412TF-40000S powder1.8-2.0<6<0.5≥8036000 44000412TF-60000S powder1.8-2.0<6<0.5≥8055000 6500046TF-70000S powder 1.8-2.0 <6<0.5≥8066000 74000 46