5. Operating the INFINITE M1000 PRO
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Instructions for Use for INFINITE M1000 PRO No. 30064852 Rev. No. 1.0
2011-09
5.3.6 Measurement
Accessories
Recommended Types of Microplates
Generally, for high fluorescence sensitivity, black microplates are recommended.
For low concentrations of TRF labels, white microplates seem superior. You may
check if white plates are superior with UV excitation wavelengths.
With its z-Positioning capability, the
INFINITE M1000 PRO
can optimize signal for
a particular volume of dispensed sample. However, we do not recommend using
volumes less than a third of the maximum volume. When using lower volumes,
check the availability of a suitable plate type.
5.4
Optimize Absorbance Measurements
5.4.1 Measurement
Parameters
Flash Settings
‘On-the-fly’ measurements with 1 flash per well are possible for all plate types,
however, measurement precision at low light levels depends on the reading time
while fluorescence signal can be received.
The 400 Hz flash frequency mode is available for Absorbance measurements
only. By increasing the number of flashes more accurate results can be achieved.
Note
Increase the number of flashes per well until noise of BLANK wells does
not further improve, or until measurement time per well becomes
unacceptable.
Time between Move and Flash
When selecting more than one flash per well, a time delay between move and
flash can be set (100-300 ms). Due to the stop and go motion of the plate carrier,
the meniscus of the dispensed liquid may vibrate while signal is integrated. This
can give rise to fluctuations of the measured values. The effect has been
observed in the wells of 96-well plates and also in larger wells.