The Reverse Osmosis Water Purifier:
Model Puregen Ero-535

Who Needs It?

The reverse osmosis water purifier: model Puregen Ero-535 is a great filter for those who want to remove a wide range of contaminants and don't mind the slowness of the process. It is an undersink model which is ideal for homes with room under the sink. It is a low-cost, high performance reverse osmosis system.

It's claim to Quality

Because the reverse osmosis water purifier: model Puregen Ero-535 is a reverse osmosis process it removes a wide range of impurities. It is given the rating of "very good" by Colin Ingram, an expert in all aspects of drinking water, in his book, The Drinking Water Book. His system of rating focuses on a filters ability to remove contaminants and runs from "acceptable" to "good" to "very good" and finally to "excellent". "Very good" means it "eliminates almost all potential pollutants".

The Puregen Ero-535 model is WQA Certified. The Water Quality Association is an independent organism similar to NSF which certifies water filters.

It's Features/Advantages

• It has five stages: sediment filter (5 micron), granular carbon filter, carbon block filter, reverse osmosis membrane and a final granular carbon filter. Hence it combines the benefits of reverse osmosis and carbon filtering.
• It gives you 1.5 gallons per hour or 36 gallons per day of filtered water. You can get a 2 gallon per hour or a 3 gallon per hour system for slightly more.
• There is a tank level control for automatic shut off so the 3.2 gallon storage tank is always full.

It's Disadvantages

Every kind of filter has its disadvantages. The disadvantages of the reverse osmosis water purifier: model Puregen Ero-535 Reverse Osmosis are similar to those of most reverse osmosis units. The process is very slow when compared to filters that can give you 1 gallon of filtered water per minute. Here your trade off is quality of filtering. The other major disadvantage is the amount of water that is wasted. It takes 4 gallons or more of water to deliver 1 gallon of purified water. A third disadvantage is that the reverse osmosis process, as the distillation process, removes all minerals, not only harmful ones but ones beneficial to your health. (see: "Potential Dangers of Drinking De-mineralized Water")

What Contaminants Does It Remove?

In common with other reverse osmosis filters in combination with a built in carbon block pre-filter, this unit removes cryptosporidium, giardia, toxic metals, asbestos, volatile organic chemicals, pesticides, herbicides, uranium, radium, chlorine, fluoride, organic additives, hydrogen sulfide, dissolved minerals, mineral and organic particles, turbidity, lead, and arsenic. It partially removes bacteria and viruses as well as nitrates and other nonmetals.

Cost

1. Initial cost: $170.00 to $250.00

2. Replacement of sediment filter: $6.00 (6 months)

3. Replacement of granular carbon filter: $9.00 (6 months)

4. Replacement of carbon block filter: $10.00 (6 months)

5. Replacement of ro membrane: $43.00 (2 years)

6. Replacement of final granular carbon filter: $10.00 (6 months)

At A Glance

For Further Information

To learn more about reverse osmosis filters as well as the possible dangers of demineralized water go to "Reverse Osmosis Water Purifier".