|1||In this case the source of radiation used is incandescent lamp with tungsten filament.||In this case the source of radiation used is hydrogen or deuterium lamp, discharge tube, glow bar or Newtons glower.|
|2||They are working with visible light.||They are working with U.V. light, IR light and visible light.|
|3||Colour filters are used.||Monochromators are used.|
|4||Beer-Lamberts Law is not strictly obeyed.||Beer-Lamberts Law is strictly obeyed.|
|5||Any coloured solutions can be analyzed.||Coloured as well as colourless samples can be analyzed.|
|6||With the help of this instrument only quantitative analysis is possible.||Quantitative as well as qualitative analysis are possible.|
|7||These instruments are not costly.||These instruments are costly.|
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