Agilent Technologies 8890 - To Check NPD Performance

15 Maintaining the FPD+
To Change the FPD+ Wavelength Filter
248 Maintaining Your GC
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.