Abstract
Ayurved has a long and strong heritage use of Polyherbal drugs and formulations to treat various diseases. Standardization of Ayurvedic formulations is an important step for the establishment of a consistent biological activity, a consistent chemical profile or simply a quality assurance program for production and manufacturing of herbal drugs. It is a burning topic in Ayurvedic drug industry nowadays. Tremendous work is going on for standardization of Ayurvedic drugs to prove its reproducibility, compatibility and safety on modern parameters. 
 Concept of churna is well established in Ayurvedic pharmaceutics for therapeutic purposes as well as for production of other formulations. There is sound description of its various method of preparation along with shelf life period in Ayurveda. Implication of latest analytical techniques is the demand of time to standardize different churna. Plant material may vary in physiochemical content and therefore in its therapeutic effect; according to different places of collection, with different times in a year for collection, with collection at the same time and places but in different years and with a particular medicinal plant. Adding to this variability is the fact that in herbal medicine several plants may be used together in the same preparation. It is very important that a system of standardization is established for every medicine in the market because the scope for variation in different batches of medicine is enormous. This means that there should be a quality control test for the entire preparation to ensure quality of the product.
Highlights
TLC and HPTLC give the knowledge regarding the components of formulations
Coarse (2000/355) All the particles will pass through a No 2000 sieve, not more than 40% through a No 355 sieve
The need for the quality control methods for theAyurvedic drugs is must due to commercialization of the Ayurvedic pharmacies during the current century and due to the inclusion of the Ayurvedic drugs under the Drugs and Cosmetic Act
Summary
Reviewing the modern and ayurvedic scientific literatures to study standardization parameters of churna. 5g of coarsely powdered air-dried drug was macerated with 100ml of alcohol in a closed flask for twenty-four hours, shaking frequently during six hours and allowed to stand for eighteen hours It was filtered rapidly; taking precautions against loss of solvent. 5g of coarsely powdered air-dried drug was macerated with 100ml of chloroform water in a closed flask for twenty-four hours, shaking frequently during six hours and allowed to stand for eighteen hours. Retention time varies depending upon the interactions between the stationary phase, the molecules being analyzed, and the solvent(s) used.[13]
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