Why 75 GPD Residential RO Membrane is the best-selling product on the market?

AliExpress shows that the most sold RO membrane model is HID™ 1812-75 GPD, then Why 75 GPD Residential RO Membrane is the best-selling product on the market?

1. Most people choose 75GPD reverse osmosis water purifier.

When we buy a reverse osmosis water purifier, we will see the words 50GPD, 75GPD, 400GPD behind the model. This represents the total amount of water that the reverse osmosis filter element can process per day in an ideal state for this water purifier. "G" means gallon.

 The 75GPD water purifier means that it can produce 75 gallons of water per day, and 1 gallon is equal to 3.78 liters and can produce 283.5 liters of water 24 hours a day. Of course, this is an ideal state, and there will be actual deviations because of the different inlet pressure, temperature, and water quality.

Is 75GPD (283.5 liters) enough water? According to market household water surveys, a person will drink at least 1.5 liters of water per day, so if direct drinking water is provided, 75GPD is sufficient. Even with cooking and washing dishes are completely fine. Of course, it is impossible for us to use up the 283.5 liters of water in one day because this requires a water purifier to continuously produce water, which is unrealistic. Although the other advantage of the large reverse osmosis filter element is its fast water production speed. For example, a 400GPD water purifier can produce 1 liter of water in 1 minute, while a 50GPD water purifier needs 8 minutes. However, for daily household use, if there is no need to use a lot of water continuously, 50GPD or 75GPD is enough. Because this kind of water purifier is with a pressure bucket, usually 3.2 gallons can store about 8 liters of water. This 8 liters of water is enough for cooking and drinking. After use, the water purifier will work and store water again.

2. 75GPD reverse osmosis membrane is more economical.
As we all know, the RO membrane element is the key to the water purifier, but the RO membrane needs to be replaced in one or two years. But the greater the flux of the reverse osmosis filter, the higher the price. Therefore, 75GPD is highly cost-effective.