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To prepare HPMC gels, the selected HPMC powder must be properly dissolved in the solvent, typically water. For effective dissolution, it is important to slow the addition of HPMC to the stirring water to prevent clumping. Mixing should occur in a controlled manner, often at room temperature or slightly elevated temperatures, depending on the specific HPMC grade. It may take some time for HPMC to fully hydrate, usually within 30 minutes to several hours.
hpmc gel preparation

hpmc gel preparation
