Both PSL chiller filters look good. The Crystal Chiller filter appears a bit more yellow than the Diode Chiller. I believe this to be OK, as this is a different type of filter than the Diode Chiller filter. I will check the filters in the PSL enclosure at next access to see if there is any discoloration in the filter under the PSL table. No water was added to either chiller. Closing FAMIS #8611