At 0830 the oscillator was set up using a manufacturer's water product.Three days later, there was no particulate noted in the canister.That same day (third day from set up), manufacturer's brand water was used in humidifier canister.On day 6 after set up, at 0900 an unknown substance was noted in the humidifier canister.This substance appeared to be white particulate matter.When the particulate was noted in the humidifier canister the products were discontinued from patient use and there was no patient harm.
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