298 Maintaining Your GC
15 Maintaining the FPD
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5 To prevent light from damaging the PMT, cap the end or
place it face down.
6 Place a clean cloth under the filter housing to catch the
filter.
• For phosphorus filter, use the sharpened wooden tip of
a toothpick or cotton swab to dislodge the filter from
the housing.
• For sulfur filter (shown below), use the wooden tip of
the cotton swab to remove the filter spacer. Then
dislodge the filter from the housing.
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