What is the appropriate viscosity of hydroxypropyl methyl cellulose (HPMC)?

What is the appropriate viscosity of hydroxypropyl methyl cellulose (HPMC)?

Putty powder is generally 100,000 yuan, but the mortar is more demanding, and it takes 150,000 yuan to work. Moreover, the most important role of HPMC is water retention, followed by thickening. In putty powder, as long as the water retention is good and the viscosity is lower (70,000-80,000), it is also possible; of course, the viscosity is higher, and the relative water retention is better. When the viscosity exceeds 100,000, the effect of viscosity on water retention is Not big anymore. And the viscosity is higher, it is better to use in cement mortar.