Portable installation
No Dedicated Faucet or Storage Tank
Connects to a compatible cold-water outlet and produces purified water directly into a clean pitcher, dispenser, or storage container.
5-Stage UltraPure Countertop Reverse Osmosis System with DI Post-Filter — 75 or 150 GPD — SKU 002-UB12
Price range: $119.00 through $149.00
- Description
- Additional information
- Reviews (6)
Description
Portable UltraPure countertop RO/DI
5-stage reverse-osmosis system with mixed-bed DI polishing and 75 or 150 GPD membrane
This compact countertop RO/DI system connects to a compatible faucet or utility-water outlet without permanent under-sink installation. It combines sediment filtration, coconut-shell carbon, a high-rejection TFC membrane, mixed-bed deionization, and final T33 carbon polishing for users seeking very low-TDS water.
5 stagesSediment, carbon, RO, DI and T33
75 or 150 GPDTwo membrane-output options
11–22 minApproximate time per gallon
1:2.4Approximate pure-to-drain ratio
Product purpose
Portable reverse osmosis with final deionization polishing
The RO membrane removes most dissolved minerals before water reaches the mixed-bed DI cartridge. The DI stage then further reduces residual ions that pass through the membrane, while the final T33 carbon stage improves taste and odor.
Ultra-low TDS treatment
Mixed-Bed DI Post-Filter
Provides additional ionic polishing after the membrane. Final TDS depends on source water, membrane rejection, DI capacity, flow, and cartridge condition.
Five filtration stages
From particle protection to final taste polishing
1
5-Micron Sediment
Helps capture rust, sand, dirt, and other suspended particles before they reach the carbon filter and RO membrane.
2
T28 Coconut-Shell Carbon
Helps reduce chlorine, taste, odor, and selected organic compounds that could affect membrane performance.
3
TFC RO Membrane
Helps reduce dissolved salts, hardness minerals, fluoride, nitrate, arsenic, lead, chromium, and many other dissolved constituents.
4
Mixed-Bed DI Cartridge
Further polishes residual ionic impurities after reverse osmosis and helps lower post-membrane TDS.
5
T33 Coconut Carbon
Provides final taste and odor polishing before the water is collected for use.
Key benefits
High-rejection RO plus final DI polishing
Reverse-Osmosis Reduction
Helps reduce dissolved minerals, salts, metals, fluoride, nitrate, and other membrane-rejectable substances.
Mixed-Bed Deionization
Further reduces ions that remain after the RO membrane.
Two Output Options
Choose 75 GPD for standard output or 150 GPD for faster collection under suitable conditions.
Final Carbon Polishing
The fifth-stage T33 cartridge helps improve taste and reduce residual odor.
Portable Countertop Use
No storage tank, drain saddle, dedicated faucet, or permanent under-sink installation is required.
Multiple Adapter Options
Choose a standard kitchen, bathroom, garden/laundry, pull-down, or another supported connection.
Output expectations
Approximately one gallon every 11–22 minutes
Countertop reverse osmosis produces a slow purified stream by design. Actual output depends on pressure, temperature, source-water TDS, membrane condition, and flow-restrictor configuration.
Produces approximately one gallon in 22 minutes under suitable conditions, or about 2.5–3 gallons per hour.
Produces approximately one gallon in 11 minutes under suitable conditions, or about 5–6 gallons per hour.
The GPD rating is a standardized membrane rating, not guaranteed household output. Cold water, low pressure, high source TDS, clogged prefilters, and membrane age reduce production.
Reduction guidance
What the filtration stages may help reduce
Reduction performance varies with source-water chemistry, pressure, temperature, membrane condition, DI capacity, flow, and maintenance. This system is intended for treated potable water.
RO membrane helps reduce
Total dissolved solids
Calcium and magnesium
Sodium
Fluoride
Arsenic
Lead
Nitrate
Chromium
Sulfate
Copper
Calcium and magnesium
Sodium
Fluoride
Arsenic
Lead
Nitrate
Chromium
Sulfate
Copper
Prefilters and DI stage help reduce
Sediment
Rust particles
Chlorine
Unpleasant taste
Odor
Selected VOCs
Residual ionic impurities
Rust particles
Chlorine
Unpleasant taste
Odor
Selected VOCs
Residual ionic impurities
Connection options
Select the adapter that matches the cold-water outlet
STD
Standard Kitchen Faucet
Designed for faucets with a removable aerator and compatible male or female aerator threads.
BATH
Bathroom Faucet
Male or female bathroom-faucet adapters may be supplied according to the outlet thread.
3/4
Garden or Laundry Outlet
Uses a compatible 3/4″ garden-hose-thread connection for a utility sink or washer outlet.
PULL
Pull-Down or Sprayer Faucet
Requires a special adapter. The current page estimates compatibility with approximately 50% of models.
Specifications
Verified configuration and operating details
| Product type | Portable 5-stage countertop RO/DI system |
|---|---|
| Membrane options | 75 GPD or 150 GPD TFC reverse-osmosis membrane |
| Stage 1 | 5-micron quick-connect sediment filter |
| Stage 2 | T28 coconut-shell activated carbon filter |
| Stage 3 | High-rejection TFC RO membrane |
| Stage 4 | K2555 mixed-bed DI ion-exchange filter |
| Stage 5 | T33 coconut-shell activated carbon post-filter |
| Approximate production | 1 gallon in approximately 11–22 minutes; about 3–6 gallons per hour |
| Approximate water ratio | 1 part purified water to approximately 2.4 parts drain water |
| Recommended source pressure | Minimum approximately 40 PSI; better performance at 55–60 PSI or higher |
| Water temperature | Cold water only |
| Listed assembled size | Approximately 14 × 6 × 7 in |
| Listed shipping size | 16 × 8 × 8 in |
| Listed shipping weight | 84 oz / 5.25 lb |
| Filter replacement | Approximately every 8–12 months or up to 1,000 gallons, depending on water quality and usage |
| RO membrane replacement | Approximately every 24 months, or based on measured rejection and performance |
| SKU | 002-UB12 |
Package contents
- ✓Complete five-stage countertop RO/DI system
- ✓Preinstalled sediment, carbon, RO, DI, and T33 filters
- ✓Selected 75 or 150 GPD membrane
- ✓Selected connection adapter
- ✓Tubing and required system connections
- ✓User manual
Water-quality expectations
Final TDS depends on both membrane rejection and DI capacity
The current page gives an example of approximately 1–22 ppm from source water near 300 ppm after 4–6 days of use.
Replace the DI stage when post-DI TDS rises beyond the required target or the resin is exhausted.
“Close to 0 ppm” is a product-positioning description, not a guaranteed result. Actual output may be above zero depending on source water, membrane rejection, DI capacity, flow, and cartridge condition.
Filter replacement
Maintain according to usage and measured performance
Replace approximately every 8–12 months or up to 1,000 gallons, and sooner if flow, chlorine breakthrough, taste, odor, or TDS indicates exhaustion.
Replace approximately every 24 months or when measured membrane rejection declines below the desired level.
Before purchase
Good to know
!
Near-zero TDS is not guaranteed
Final TDS depends on the membrane, DI resin, source water, pressure, flow, and cartridge condition.
Final TDS depends on the membrane, DI resin, source water, pressure, flow, and cartridge condition.
!
DI capacity is finite
High source TDS or poor membrane rejection can exhaust the DI resin more quickly.
High source TDS or poor membrane rejection can exhaust the DI resin more quickly.
!
Not a microbiological purifier
Do not use microbiologically unsafe or unknown-quality water without suitable upstream disinfection.
Do not use microbiologically unsafe or unknown-quality water without suitable upstream disinfection.
!
RO creates drain water
Plan for approximately 2.4 gallons of concentrate water per gallon of purified water collected.
Plan for approximately 2.4 gallons of concentrate water per gallon of purified water collected.
!
Output is not faucet-fast
Collect water in advance. Low pressure and cold water can significantly slow production.
Collect water in advance. Low pressure and cold water can significantly slow production.
!
Pull-down fit is limited
The special adapter fits only some pull-down and sprayer faucets because thread designs vary.
The special adapter fits only some pull-down and sprayer faucets because thread designs vary.
This system is intended for treated potable cold water. Reduction, TDS, and production results depend on source-water chemistry, pressure, temperature, membrane condition, DI capacity, flow, and maintenance. Absolute bacteria, virus, contaminant-count, and fixed-percentage reduction claims are not included in this description.
Not sure whether to choose 75 or 150 GPD?
Send the source-water TDS, water pressure, intended daily volume, faucet photos, and desired final-water TDS.
Send the source-water TDS, water pressure, intended daily volume, faucet photos, and desired final-water TDS.
Additional information
| Weight | 84 oz |
|---|---|
| Dimensions | 16 × 8 × 8 in |
| Membrane | 150 Gallons per day, 75 Gallons per day |
| Connection | Standard Kitchen faucet, Bathroom faucet adapters, Garden/laundry utility outlet, Pulldown/sprinkler type kitchen faucet, Other Connection (you can specify later) |
6 reviews for 5-Stage UltraPure Countertop Reverse Osmosis System with DI Post-Filter — 75 or 150 GPD — SKU 002-UB12
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Mike D –
Filtration requires patience but the quality of water is perfect! It is a slow fill process so I would walk off and forget I was filling jugs. Filtration requires patience but the quality of water was perfect!
Angel –
Yes it’s kind of slow and yes you have to wait. Don’t expect quick. I want to think that the osmosis it works like a ram pump off the membrane pumping out the crap that you don’t want. People complain it takes forever, yup it does they mentioned it in the description, but there again people are stupid they don’t read or they don’t know how to understand what they are reading. That’s what I find with 98percent of complaints and yes there are a few people who really have a problem and that I blame people who work at the factory again not reading or paying attention to their job flowing the process of building a filter (water) not taking time to make sure they have a great (in this case) water filter that doesn’t leak.
Mine I got didn’t leak somebody read and took their time and did it the right way (should be all the time) a lot people say this leaks I had to do this and that and complain it doesn’t work nothing comes out. It states that in manual it takes a few minutes for the water to flow out. Belching out water every now and again, like it’s puking that the filter back washing the crap out the discharge. That’s why I written it has a ram pump effect. All and all have patience it will take some time worth it in long run
Leon –
This review is long overdue. I purchased this in Feb. 2022, but since I collected a lot of rain water for my orchids when there was a lot of rain in San Diego, I put off using it. I finally got to use it last weekend so I can now provide objective feedback.
Product functionality exceeded my expectation.
NOTE: I connected my filter to a drinking water hose and connected to my outdoor faucet. I also purchased the garden hose at Amazon.
The TDS reading of the water from my outdoor faucet is 460 ppm. Here are a few readings when I checked the TDS of the water that came out of this filter.
Before collecting clean water, I let the water ran through the filter until clear (not black anymore) water started to come out.
First collection
– Clean water – TDS 38 ppm
– Waste water – TDS 601 ppm
Second collection
– Clean water – TDS 19 ppm
– Waste water – TDS 619 ppm
Third collection
– Clean water – TDS 12 ppm
– Waste water – TDS 621
So it looks like the more gallons I collected the cleaner the water seems to be.
The only downside is that for every one gallon clean water, two gallons and one quart goes to waste water, which is really not wasted because I used it to water other plants. Also, it takes 15 minutes to collect one gallon clean water. Nevertheless, I am satisfied with this purchase. Good purchase!
Liz Honey –
I would give this 5 stars if it didn’t waste so much water. For me it makes 2 and half gallons of pure water every 1 hour. After running it for about 60 minutes the TDS finally got to 0. Also make sure to use cold water and refrigerate filter system when not using to extend lifespan and quality.
Masha McKea –
Perfect portable water filter. Water is 90% of the fluid that I drink. Quality and safe water is huge to me. I do a lot of camping and take this to work that has water that I don’t trust. I was surprised at the ease of hooking this up to the faucet at work and at the campground as well. With the adapters, this makes it versatile. I love that it has five stages with a reverse osmosis filter that all fits together neatly for ease of transport
Frank A –
Been having issues with city water for a while now, black residue from manganese, terrible flavor, causing illness, was killing my plants. I purchased this and man what a great decision. Water has no taste to it at all now and no residue. I and my plants have been so much healthier with this. My neighbor even comes by to get some water from me. A lot cheaper and better tasting that even bottled water.