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4. Defining Filter Slides (infinite® F200 only)
2008-07
Instructions for Use for
infinite® 200
No. 30017581 Rev. No. 1.4
55
4. Defining Filter Slides
(
infinite
®
F200
only)
4.1 About Filters
4.1.1
Fluorescence Filters
The optical filters (bandpass style) in a filter slide are specially designed for
fluorescence measurements. The spectral rejection and the bandwidth of the
fluorescence filters are optimized for achieving excellent sensitivity.
Contact TECAN for filters other than those supplied on the delivered filter slides.
4.1.2
Absorbance Filters
Bandpass filters, which are commonly used in microplate readers for absorbance
measurements, usually have a bandwidth of 10 nm. Therefore it is not
recommended to use fluorescence filters for absorbance measurements because
the bandwidth (FWHM) is usually larger than 10 nm. This could cause a bright
value error or low OD values when measuring dyes with narrow peaks.
4.2 Filter Slide and Filter Orientation
4.2.1
Filter Slide
The
infinite
®
F200
filter slide consists of an excitation and an emission part. The
filter slide enables the user to work with four independent and non-
interchangeable excitation/emission filter pairs, which can be defined on positions
1 to 4. The information about the inserted filters is saved on the integrated
microchip.
infinite
®
F200
: Filter slide
Emission part
Excitation part