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Stokk

Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58, FCC Listed, S1

    • Based on 34 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Jun 6
Order within 5 hours and 23 minutes
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Style: 400 GPD


Color: White


Features

  • 8-stage High-efficiency Filtration: Tested by official third-party laboratory, Stokk reverse osmosis water filter effectively reduces 1000+ contaminants by 99.99%. S1 PPC filter adopts a composite filter technology, combining pre-activated carbon and post-activated carbon filters to effectively reduce odor and chloride. The RO filter uses 0.0001-micron reverse osmosis membrane, which can effectively reduce TDS, PFAS, PFOS, PFOA and so on
  • NSF/ANSI 58: Insist on pursuit of excellent quality, use high-quality materials. Stokk S1 reverse osmosis water filter is against NSF/ANSI 58 and EPA 200 standards, passed SGS testing and FCC certification, effectively eliminating the hidden risks of tap water. Your safety is fully guaranteed
  • Compact Tankless Design: Unlike traditional RO water filtration systems, Stokk under sink water filtration system boasts a sleek, compact design. It saves over 75% of under-sink space and prevents recontamination, making it perfect for American kitchens. Easy to install, takes only 30 minutes to complete. Save time and upgrade your kitchen now
  • 400 GPD High Capacity & 2:1 Pure to Drain Ratio: Offer a higher water capacity of up to 400 GPD, and filtering one cup of water in just 10s, which meets demands of family for top-quality water. This tankless RO system saves water waste by 800% compared to traditional under sink RO system. Stokk's home RO water filter system is the optimal choice for those seeking high-performance water filtration
  • Thoughtful & Convenient Design: S1 tankless RO water filtration system is equipped with a built-in filter life reminder, freeing you from tracking the filter's service life. The filter element adopts a twist-and-pull design and can be replaced within 2 seconds. Moreover, Auto flush prevents sediment accumulation, extending the filter's lifespan and ensuring your water stays consistently pure. Thoughtfully designed for your convenience and peace of mind
  • Integrated Product Design: The Stokk reverse osmosis system features the advanced electrical and water circuits to reduce leaks. Unique noise reduction technology allows you to enjoy pure water without the disturbance of noise. NOTE: An electrical outlet and drilling holes is required to operate it

Brand: Stokk


Special Feature: Tankless, Reduce TDS, 8 Stage Filtration, 0.0001μm RO, TDS Reduction, Improve Taste, 21 Pure to Drain, Reduce 1000+ contaminants, Change Filter Indicator, Automatic Flushing See more


Product Dimensions: 14.57"L x 4.49"W x 11.95"H


Package Information: Dispenser


Installation Type: Under Sink


Power Source: Corded Electric


Item Weight: 7.6 Kilograms


Model Name: S1


Lower Temperature Rating: 41 Degrees Fahrenheit


Maximum Flow Rate: 0.28 Gallons Per Minute


Brand: Stokk


Special Feature: Tankless, Reduce TDS, 8 Stage Filtration, 0.0001μm RO, TDS Reduction, Improve Taste, 21 Pure to Drain, Reduce 1000+ contaminants, Change Filter Indicator, Automatic Flushing


Product Dimensions: 14.57"L x 4.49"W x 11.95"H


Package Information: Dispenser


Installation Type: Under Sink


Power Source: Corded Electric


Item Weight: 7.6 Kilograms


Model Name: S1


Lower Temperature Rating: 41 Degrees Fahrenheit


Maximum Flow Rate: 0.28 Gallons Per Minute


Upper Temperature Rating: 100 Degrees Fahrenheit


Item Weight: 16.72 pounds


Manufacturer: JIN FANG TECHNOLOGY (HONG KONG) LIMITED


Country of Origin: China


Item model number: S1


Date First Available: January 12, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jun 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Best RO system I’ve owned…
Review Image by Calvin Calvin
Review Image by Calvin Calvin
Review Image by Calvin Calvin
Review Image by Calvin Calvin
Review Image by Calvin Calvin
I have owned, or installed for friends, more than six reverse osmosis systems, both five stage and six stage. This is the best one so far. It is by far the easiest to install and the most compact. It provides continuous water at the faucet, without needing to recharge a pressure tank that most systems need. What I like… - Very high product to waste efficiency. This unit waste is 1/8 that of standard RO systems. - One liter per minute flow rate. That’s very fast for direct RO flow without a tank. Standard RO is barely a dribble without the storage tank. - Easy installation. Fewer plumbing/tubing connections. (See pic) - Easy filter and membrane changes. The cartridges even have built-in lever to remove and replace, no special wrench required. (See pic) - Quiet operation. The high efficiency is assisted by a booster pump. The pump is very quiet and only runs when the faucet is on (or product water is flowing). - Well-written installation manual with drawings. The tubing is marked to know how far to insert it into the fittings. (See pic) Improper tubing connection is the main reason that RO systems leak. This marking and explanation in the manual helps assure correct leak-free installation. - No guesswork filter and membrane replacement. Lights on the unit indicate when each needs replacing. Shortcomings… - The unit must rest on the floor or base of cabinet. No wall mount. Considerations… - RO systems are rated by GPD (gallons per day) but the real-world measure to consider is flow rate, or recovery rate for tank-based systems. I will never use the 100 GPD produced by my standard RO or 400 GPD produced by this system, but a higher GPD means faster flow or recovery per minute. Be aware and don’t be mislead by GPD numbers thinking that a system produces more than you need. This system delivers one liter per minute, a respectable flow rate. - Because it contains a booster pump, it requires an electrical outlet in the installed location. Many homes have an outlet for the dishwasher, so be aware an outlet might be available. - Cold water supply valve and drain also required in installed location. - The cartridges are easy and fast to change, however they are proprietary and more expensive. Future availability is a consideration. By comparison, standard RO parts are widely available and inexpensive. - I installed this for my undercounter ice machine. (See pic) Standard RO doesn’t produce enough flow to supply an ice machine. This one does. The feed valve was already installed and I didn’t need or install the faucet. Even with that, and my past experience installing standard RO systems, it took 45 minutes. The 30 minute installation estimate stated in the description is not typical for the average person. The box included the main unit with installed cartridges, power supply, faucet, tee valve and drain connection with hardware and a well-written installation guide. (See pic) As noted above, it took me about 45 minutes to install. A drill and bits and screwdriver are required. I used a tubing cutter to shorten the tubing for a neater install. Tip: be sure there’s enough excess tubing to be able to remove the base from the cabinet and still remain connected. This makes servicing and inspection much easier. If you cut tubing, be sure to mark it to the insertion point. It’s better to make sure because it is easy to think it’s fully inserted and find out it isn’t when it leaks. The ice in my machine has gone from cloudy with excess minerals, to clear. It tastes better now, too. I hope this information was helpful to you. ——- This review is for: Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, Reduces PFAS TDS, Under Sink RO System, 2:1 Pure to Drain, 400 GPD, NSF/ANSI 58, FCC Listed, S1 ... show more
Reviewed in the United States on April 7, 2024 by Calvin Calvin
    • Review from experienced RO/DI user
Style: 600 GPD Color: White
I used to have a large saltwater aquarium which required and RO/DI system. I have used many different setups and moved them across many different houses and I can say that this setup is AMAZING (thus far)! Recently our tap water has started to have a nasty chlorine taste and I have noticed the nasty residue it leaves behind in the counter top ice maker (also highly recommend these). When I saw this simple all in one unit with 600gpd, I knew I needed it. I have a tricky install because I didn't want to have to drill my granite countertops, and I wanted water to feed the refrigerator and counter top ice maker. I opted to install the unit in the cabinet over the refrigerator so I could supply it with that water, and then feed the fridge as well. I mounted the faucet in the cabinet next to the fridge so that I could feed the ice maker without moving water around. The only issue was where to make the waste water go. I was able to feed it over 25ft away into the washing machine waste water since my sink and dishwasher are on an island. The unit fired up and the manual was not wrong when it says not to drink the first 30 minutes of water! After that, I filled my ice maker (cleaned it with vinegar just before) and I was impressed with the crystal clear ice it made! This impressed the entire family! After removing the old clogged refrigerator filter, I now have clean cold water coming out of the fridge as well! Side note, that the fridge will need a booster pump to help keep the pressure up since the output pressure of this system is not as high as the fridge requires. Overall, a great system that comes with everything you need for a standard install and the results speak for themselves. I highly recommend and would buy it again! ... show more
Reviewed in the United States on March 27, 2024 by Eric E. Smith
    • Stokk S1 Reverse Osmosis System
I think it was fairly simple to install, provided you already have an inline water connection , a pre-tapped drain and a 110v - 120v outlet under your sink. We had the water supply for the fridge that we no longer use, so simply used that line by extending it to under the sink. I didn't like the idea of tapping the bigger water intake under the sink, so I used one that I know doesn't leak. Then I drilled a hole in the sink for the faucet. Again not tough just time consuming. Then time to tap the drain. This was the part I didn't like. no not the task, the use of the device they supplied. Plastic and cheap and if you think that your drain won't back up enough to provide pressure you would be wrong. my solution was better. I drilled the hole and then I hot glued the hose into the drain. Not regular hot glue, but gorilla hot glue. Trust me it is never coming out. Once all that was done, I tapped into the electric line for the garbage disposal at the wall, and ran a new wire to an outlet I installed. Again not hard but, you guessed it...time consuming. So 5 hours in and it was done :) Water taste great and hopefully last longer then the fridge. I also would say it is best if you buy a water purity tester, to judge for yourself when the filters need changed. Our fridge would say replace every 2 months whether it was used much or not. The ice machine half the time would not work and if you look, it wasn't using the filter anyway. So change every 2 months for 6 glasses of water. LOL. ... show more
Reviewed in the United States on April 5, 2024 by Xterminator

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