2021-05-11 16:55:51
𝗦𝗽𝗮𝘁𝘂𝗹𝗮𝘁𝗶𝗼𝗻 - In this method ,mixing of powders is done by the movement of a spatula throughout the powders on a sheet of a paper or on a porcelain tile. The method is very useful in mixing -
a)Small amount of powder.
b)Solid substances that liquefy or form eutectic mixtures,when in close and prolonged contact with one another since very little compression or compact results.
The method is not suitable for large quantities of powders or for powders containing one or more potent substances because homogenous blending may not occur.
𝗧𝗿𝗶𝘁𝘂𝗿𝗮𝘁𝗶𝗼𝗻 - It is used to comminute( reduce particle size) & to mix powders. If particle size reduction is desired along with mixing of powders, a porcelain mortar with a rough inner surface is preferred to a glass mortar with a smooth working surface. A glass mortar may be preferred for chemicals that may strain a porcelain surface and for simple mixture of substances without special need for comminution. A glass mortar cleans more readily after use.
𝗦𝗶𝗳𝘁𝗶𝗻𝗴 - The powders are mixed by passing through sifters. This process results in a light fluffy product and is generally not acceptable for incorporation of potent drugs into a diluent base.
𝗧𝘂𝗺𝗯𝗹𝗶𝗻𝗴 - Tumbling is the process of mixing powders in a large container rotated by an electric motor. These blenders are widely employed in industry as large volume powder mixers. @FuturePharmacist
1.7K views13:55
S
