The manufacturer received information regarding a [device name].The patient alleges to have observed black particles inside of the reservoir of the humidifier tank (approximately 10 pieces).The patient stated the filters were changed, and the filters were not turning black in color.The patient provided the method used to clean the device stating the water tank, hose, and sometimes the mask was soaked in vinegar.There was no allegation of serious or permanent harm or injury.No medical intervention was required for the patient.
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