Electrolyzed water: power consumption, oxygen will create hydrogen at the same time easy to cause an explosion, now this machine has been eliminated.
Chemical oxygen: the use of trouble (every time after the use of cleaning), the use of high costs, chemicals have a negative effect on the body, the machine price of 200 to 300 yuan, each time the use of time 10 to 20 minutes 5 yuan or so, every day to use the calculation of the 2 times per year, 3650 yuan, the drugstores have.
Electrochemical oxygen: power consumption, the use of higher costs (each time you need to add distilled water, each bottle of distilled water 1.8 yuan can be used for 13 to 40 minutes or so), the short life of the machine (five thousand hours or so), the biggest advantage of the noise, the price of the machine 1980 yuan, Acorn International.
Physical oxygen (molecular sieve oxygen concentrator): noise, volume, short life, expensive, high power consumption, 3,000 yuan to 20,000 yuan ranging, medical equipment stores.
Physical oxygen (sea oxygen house oxygen concentrator): small size, light weight, long life (about 40,000 hours), less power consumption, the disadvantage is that there is noise (35 decibels or less basically will not affect the life), the machine price of 2008 yuan.