Vis Spectrophotometer
A look at what is currently available on eBay
 C85987 Perkin-Elmer Lambda Array 3840 UV/VIS Spectrophotometer US $99.99 
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 GBC UV/VIS 916 Double Beam UV Visible Spectrophotometer US $2,099.98
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 BIOCHROM LIBRA S22 UV/VIS SPECTROPHOTOMETER US $3,999.00
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 Hitachi model 100-10 spectrophotometer UV-VIS US $200.00
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 SLM Aminco DW2000 UV/VIS Spectrophotometer Model DWD300 US $9,999.99
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 JENWAY 6105 UV VIS UV/VIS SPECTROPHOTOMETER US $2,999.99
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 PERKIN ELMER 55X SERIES UV/VIS SPECTROPHOTOMETER MANUAL US $34.00
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 Deuterium lamp for HP 8452A UV/VIS spectrophotometer US $99.99
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 New! Professional UV-VIS Spectrophotometer 4 Laboratory US $1,950.00
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 Beckman DU 730 General Purpose UV/Vis Spectrophotometer US $6,999.00
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 HP Agilent 8453 G1103A UV VIS Spectrophotometer US $3,695.00
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 Agilent Technologies 8453 UV-Vis Spectrophotometer G1103A US $6,005.50
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what is baseline correction?
can somebody help me understanding the concept of baseline correction in UV-VIS Spectrophotometer? why do we need to perform it before taking the absorbance and how often we should perform it?
Kindly Help.
Thank You.
Baseline correction is removing "backround noise", also known as unnecessary peaks, caused by carbon dioxide, oxygen, impurities in the air etc. Basically it makes your data graphs much better looking.
To do this you just have to run a blank with your solution in it and then subtract it from your actual data (Usually programming will do this). Baseline correction and running of a blank should be done everytime you use the spec.
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March 20th, 2006 in
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