Biometra TOne
Function and design
17
The optional gradient function allows you to optimize the temperature program for new
primer pairs in a single run. To do this, use the Linear Gradient Tool to set a tempera-
ture difference between the columns of the sample block. The temperature difference
from one column to the next within a particular sample block is always the same.
3.2.3
Heated lid
The heated lid heats twice as fast as with older models and thus helps to shorten proto-
col run times. Moreover the heated lid fulfills two other important functions:
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It prevents condensation of sample liquid above the block surface.
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The constant contact pressure of the heated lid ensures reliable contact between re-
action vessels and the thermal block.
Thanks to the integrated clutch mechanism, the pressure applied by the heated lid to
the reaction tubes is always the same, regardless of the height of the plasticware that is
used. The shape of the heated lid and the constant contact pressure ensure that the
temperature is distributed evenly across all samples. Temperature uniformity is very
high.
After pressing the lid sealing button, the heated lid swings up slowly. Thanks to this
mechanism, the lid cannot fall down but will always swing back into the open position.
The fully opened heated lid will be outside your operating range while you insert the
PCR tubes or plates. The risk of pinching your fingers or burning your skin on the hot
surface of the heated lid is low.
3.2.4
Terminals and interfaces on the rear of the device
The rear panel of the device houses the Ethernet port, the power plug and the mains
switch.
1
4
3
2
Fig. 3
Device rear
1 Ethernet port
2 Mains switch
3 Fuse holder
4 Power connection
