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Uses room air as raw material, produces oxygen concentration of 90% at 1L/min, 40% at 3L/min, 30% at 6L/min. Can set a timer - 15 min to 90 min. Includes a wet cup so water can be added to moisten the air if one wishes. Pressing the anion button increases the negative ions for more oxygen purity. Has been used fewer than 10 hours (Dr. prescribed a medical-type concentrator for my wife).
Posted in: Health & Beauty.
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