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
Time between Move and Flash
When selecting more than one flash per well, a time delay between move and
flash can be set. 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. In particular, it is critical with absorbance
measurements.
5.3.4 FI
Ratio
Mode
Ratio Mode
Up to 5 labels can be measured well-wise. This measurement mode is called
‘ratio mode’. Be aware that no ‘ratio’ calculation is performed after this
measurement. The Excel result sheet shows the raw data. Further calculations
must be performed by the user.
5.3.5 Optimal
Read
(FI
Bottom Measurements Only)
The "Optimal Read" function is available for Fluorescence Bottom
measurements only. The "Optimal Read" function is a measurement on multiple,
spatially-separated spots inside the well. The spots are arrayed to cover the
whole well area in order to achieve maximum well illumination. The total number
of individual measurement spots per well is reflected by the size of the beam
diameter of the Fluorescence Intensity Bottom fiber and is optimized for plate
formats from 12 to 96 wells (see table below).
Plate
Pattern
Number of Spots
1536-well
‘Optimal Read’ option not available
384-well
‘Optimal Read’ option not available
96-well Circle
(filled)
5
48-well Circle
(filled) 21
24-well Circle
(filled) 37
12-well Circle
(filled) 61
6-well
‘Optimal Read’ option not available
“Optimal Read” spot patterns in different plate formats
The flash number per measurement spot is selectable via the software
(1-200 flashes) and the number of measurement spots per well is displayed as
soon as the ‘Optimal Read’ function is activated for a certain plate format in the
fluorescence bottom measurement stripe. The ‘Optimal Read’ function is
available in combination with the 400 Hz flash frequency mode only.
The user-defined ‘total number of flashes’ is automatically distributed over all
measured spots per well. A minor imprecision occurs if an entered flash number
is not divisible without a remainder by the default number of spots for the plate
format used. In this case, the next possible flash distribution that is integrally
divisible by the number of spots per well is calculated, e.g. a measurement with a
total of 26-30 flashes in a 96-well plate (5 single spots) is performed with
6 flashes per spot, whereas a total flash number of 31 results in 7 flashes per
spot.