The facility reported a green slimy substance forming on the spray arm filter of their advantage plus automated endoscope reprocessor (aer).They also reported green specks in the basin of their aer and other components in/around the basin turning green.There is potential for patient harm caused by patient exposure to the unknown substance during endoscopic procedures.(b)(4) followed up with the facility and they reported the green substance went away after switching back to their normal detergent used during pre-cleaning.At the time when the green substance appeared, they were using pure enzymatic detergent during pre-cleaning.The facility also reported recently having their water tested and results indicated high concentrations of copper.Due to the quality of the facility water, the facility's biomed reported they have to change their water filters more frequently than the minimum required schedule.The source of the green substance remains unknown.The facility reported they will continue to monitor their aer and contact (b)(4) if the green substance appears again.It is unknown if endoscopes contained the unknown green substance.There have been no reports of patient harm.This complaint will continue being monitored in (b)(4) complaint handling system.
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