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UV-Visible spectroscopy is a mature and well
established analytical technique used extensively in many
industry sectors including Environmental Analysis,
Pharmaceutical Testing, Food and Beverage Production
to name but a few. PG Instruments manufacture an
extensive range of UV and Visible Spectroscopy
instrumentation guaranteed to meet the needs of your
application. Further information on the UV-Vis product
line along with a brief introduction to UV-Vis
Spectroscopy can be found in this brochure.
UV-Vis Spectroscopy
UV-Vis Spectroscopy is an analytical method used to
measure the absorbance of ultra-violet or visible
radiation through an analayte. The molecular
absorption of the analayte corresponds to b
excitation of valence electrons and excitation
electrons in different atomic orbitals.
UV-Vis Spectroscopy is an effective technique for b
qualitative and quantitative analysis of organic
inorganic compounds.
UV-Vis Spectroscopy is based on the Lambert-
principle which states that the Absorbance of a solu
(A) is directly proportional to its pathlength (l) an
concentration (c) when the wavelength of the incide
light remains fixed.
This is summarized in the following equation, where
the molar absorbtivity
A = lc
4
Since its development in the 1950’s the UV-Visible Spectrophotometer
has evolved into an accurate and reliable analytical tool and it has beco
one of the most utilised instruments in today’s scientific laboratory.
A C C U R A T E · R E L I A B L E · F L E X I B