When using hydroxypropyl methylcellulose, a solution is generally prepared, so what points should be paid attention to when preparing a solution?Here is a brief introduction for everyone.1. Products without surface treatment (except hydroxyethyl cellulose) cannot be directly dissolved in cold water. 2. It must be slowly sifted into the mixing container, and the product that has been formed into lumps should not be directly added to the mixing container in large quantities. 3. Water temperature and ph value have a significant influence on the dissolution of the product, so special attention should be paid. 4. Do not add some alkaline substances to the mixture before the product powder is soaked by water.Raising the ph value after being soaked will help dissolve. 5. Add anti-mold agent in advance as far as possible. 6. When using high-viscosity products, the weight concentration of mother liquor cannot be higher than 2.5-3%, otherwise the mother liquor is difficult to operate. 7. Products that have undergone instant treatment cannot be used in food or medical products.