The internal audit is an efficient, free, and documented procedure for gathering audit evidence and objectively evaluating it to ascertain the extent to which the audit criteria are fulfilled. The internal audit is very effective tool not only to judge the level meeting the needed requirements but also to improve the Quality Management System of the organization and great impact for the improvement of the performance of testing laboratories, inspection, certification agencies, and can play vital role for the strengthening of any organization. Internal Audit is a major way out to read through to gain guarantee that the organization is actually doing what it says is doing. During the internal audits in accordance with any of the required check, an auditor makes sure that the actions taken to meet the quality objectives of the organization are appropriate, and management system is in compliance with the relevant standard/ check. Nowadays, quality is important in business and industrial world as it is actually the value addition. The organization must have a quality system in place to guarantee that the product or service being offered is of a high enough calibers to satisfy the needs of the clients.