Pharmaceutics

The bag filter is a mechanical device used in quality of air in pharmaceutical production and other allied areas. In pharmaceutical production very potent drugs such as hormones, vitamins, antibiotics, etc generates lot of dust during processing which may be life threatening to the operators. These processes include screening, blending, mixing, drying, granulating, tableting, compression, … Read more

An air separator is usually a mechanical device with a large metal box containing a blower, heating or cooling elements, filter racks or chambers, sound attenuators, and dampers. Air separators are usually connected to a duct in a ventilation system that distributes the air and fine particles. Principle of air Separator The air separator works … Read more

Cyclone separator are a low-cost, low-maintenance way of separating particulate matter from air or other gas streams. This separator is mainly used for the separation of solids from liquids. It mainly consists of a tangential inlet to feed the materials inside the chamber. It has solid and fluid outlets which separate fluid through one side … Read more

Sieve Shaker: In the pharmaceutical sector, sieving is the most extensively used technique for particle size analysis. The particles are categorized solely on the basis of their size, with no regard for additional qualities such as density or surface features. Micromesh sieves are used to classify particles with a size range of 5 to 20 … Read more

Mechanisms of size separation: Size separation is useful since particles are sorted into categories solely on the basis of size, independently of other properties such as density, surface, etc. It can be used to classify dry or wet powders and generates narrowly classified fractions. While doing this mechanical sieving equipments used works on the principle … Read more

What is a sieve? A sieves, sometimes known as a sifter, is a device used to separate desired materials from unwanted material or to determine a sample’s particle size distribution. This is a device that typically consists of a woven sieve, such as a mesh, net, or metal. The term “sift” comes from the word … Read more

Standards for powders used in pharmaceuticals are reported in the British Pharmacopoeia (B.P.), which states that “the degree of coarseness or fineness of a powder is differentiated and expressed by the size of the mesh of the sieve through which the powder is able to pass”. The B.P. specifies five grades of powder and the … Read more

Introduction of size separation Large pieces of material are usually estimated visually but difficulties arise only when powders are to be estimated. The aim of any estimation, including particle size separation, is either analytical or preparative. Size separation is a unit operation that involves the separation of a mixture of various size particles into two … Read more

An automated version of mortar and pestle size reduction equipment, the end-runner mill is comparable to the edge runner mill. The friction of material between the mortar and the pestle causes a heavy-weight pestle to revolve when the mortar is rotated by a motor at the base. Principle of end runner mill The principle of … Read more

The edge runner mill is also called a roller stone mill and is a mechanized form of mortar and pestle-type compression comminution. It crushes the materials into fine powders by rotating stones. The mill consists of two large rotating grinding wheels or stones turning slowly in a large bowl. In this mill, the material can … Read more