Slide the
[ON/OFF]
button at the back of the unit to turn on
the unit
(Fig. 1.3)
and wait for approximately 10
seconds or until the red LED lights up.
Fig. 1.3
Testing to ensure your Presidium Duo Tester II is
functioning properly
Glass Test disc
• Press the probe tip onto the Glass test disc located
on the right of the indicator lamp
(Fig. 1.4).
Apply
sufficient pressure to retract the protruding tip
completely into the probe pen. The indicator should
rise to and remain within the red strip (preferably at
the center of red strip) with “Glass” printed on top,
within two to three seconds.
Fig. 1.4
DUO T
ESTER
II
CAL
(1)
