The mask was returned to resmed for an extensive engineering investigation.The investigation methods, results and conclusion are not finalized at this stage.If more information is available, a supplemental report will be submitted.The mirage quattro user guide provides the following warning: "do not use aromatic-based solutions or scented oils (eg, eucalyptus or essential oils), bleach, alcohol or products that smell strongly (eg, citrus) to clean any of the mask components.Residual vapors from these solutions can be inhaled if not rinsed thoroughly.They may also damage the mask causing cracks." resmed reference#: (b)(4).H3 other text : device received, investigation pending.
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