
Operating the Fido X4
Figure 5-13
: Examples of "first touch" areas
5.3.3 How to sample
Step 1:
Remove a new sampling swipe from a package.
Note:
A sampling swipe may be reused several times until any of the following
occurs:
• an Alarm is recorded
• the swipe becomes visibly dirty
• the swipe becomes deformed or damaged
Step 2:
Sample in the center of the bottom 1 in. (2.5 cm) square of the swipe as shown
in Figure 5-14.
To sample, apply firm pressure (enough to bruise a tomato) to the back of the
swipe with your index finger while dragging the swipe in a straight line across
the surface being sampled. Lift the swipe when repositioning.
Figure 5-14
: Bullseye design (not present on actual swipe) indicates Zone of Analysis
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