D Pharma

Sieving/ SHIFTING Sieve for Pharmaceutical testing are constructed from wire cloth with square meshes woven from wire of brass, bronze, stainless steel or any other suitable material. The wire should be of uniform circular cross- section and should not be coated or plated these should not be any reaction between the material of the sieve … Read more

Definition of Size Separation Objectives of size separation Classification powder according to IP (Indian Pharmacopeia) S. No. Grade of Powder All Particles must pass through Sieve No./Nominal mesh aperture Sieve through which 40% of the particles pass/ Nominal mesh aperture Comparison of powder size 1 Coarse powder 10/(1.70mm) 44/(355µm) 1 2 Moderately coarse powder 22/(710µm) … Read more

Ball Mill Principal of Ball Mill It work on the principle impact and attrition. Construction of Ball Mill Working of Ball Mill In a ball mill, the material to be ground is placed inside a rotating cylinder along with grinding media (usually steel or ceramic balls). The efficiency of size reduction depends heavily on the rotational … Read more

Hammer Mill Principal of Hammer Mill It work on the principle of impact. Construction of Hammer Mill It consists of metal causing inclosing a control shaft to which four or more swinging hammer are attached the lower part of the mill, consists of a screen through which material can pass in a suitable receiver when … Read more

Size Reduction of Drugs Importance of size reduction Factor affecting size reduction Methods of Size Reduction:

Preservatives Definition of Preservatives Types of Preservatives On the basis of mechanism of action it is divided into three categories- Uses/Application of Preservatives

Sweetening Agents Classification of sweetening agents Uses/Applications of sweetening agents

Flavoring Agents Classification of flavouring agents Advantages of flavouring agents Disadvantages of flavouring agents Uses/Applications of flavouring agents

COLORING AGENTS Colorants or coloring agents are mainly used to improve the distinctive appearance of pharmaceutical dosages form, which are helps in the identification during manufacturing and increase the patient acceptance towards the pharmaceutical dosages form. In pediatric and geriatrics coloring agents play a major role and attract the consumer by providing the aesthetic appearance … Read more

Pharmaceutical Aids The substances which are essentially used in manufacturing or compounding of various pharmaceutical dosages form is called as pharmaceutical aids. It helps in masking the unpleasant odour, taste, and flavour of any dosages form and made to more elegant during the dosages administration. Drugs are the preparation which contains the active pharmaceutical ingredients and … Read more