Tuesday, 11 December 2012


Advantages of instrumental methods:-

  1. A small amount of a sample is needed for analysis.
  2. Determination by instrumental method is considerably fast.
  3. Complex mixture can be analysed either with or without their separation.
  4. Sufficient reliability and accuracy of results are obtained by instrumental method.
  5. When non-instrumental method is not possible, instrumental method is the only answer to the problem.

Limitation of instrumental methods:-

  1. In general, instrumental methods are costly because of cost, maintenance and trained personnel required for their handling.
  2. The sensitivity and accuracy depends upon the type of instrument.
  3. Specialized training for handling instrument is required.
  4. There is frequent need of checking results with other methods.
  5. In some cases, instrumental method may not be specific.

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