FLD S/N Raman Fail

The intensity test looks okay for an older G1321B, still the result for the S/N test is poor. You can try using a different source of water (fresh/best quality possible) and flush the system thoroughly before running the test. It could also be a contaminated degasser, releasing algae into the system, which then show fluorescence.

If the result is still low, I would suggest to call a technician to inspect the optics (e.g. EX condenser, mirror...). Very likely the quartz window of the lamp housing needs to be replaced.