Frizzlife RO-K3-A Reverse Osmosis Water Filter System - Alkaline Remineralization, 100 GPD, 1:1 Pure to Drain

Frizzlife RO-K3-A Reverse Osmosis Water Filter System - Alkaline Remineralization, 100 GPD, 1:1 Pure to Drain



  • Multi-Stage Superb Filtration: RO-K3-A under sink water filter uses RO membrane with highest filtration precision at 0.0001 micron, which effectively reduce more than 1000+ kinds of harmful contaminants (99.99%) from water including Lead, Chlorine, Fluoride, Heavy metals, Chloramine, VOCs, TDS, Limescale, Arsenic and more. Also includes a 2-in-1 composite pre-filter, and a post carbon filter with alkaline & remineralization function, which further reduces bad taste, odor & polishes the flavor. 
  • Alkaline Remineralization & Small Size: The 3rd stage post filter (TD-9) balances the alkalinity of RO water and adjusts the PH to more than 7.5, and restores essential minerals to your drinking water at the same time. Featuring with compact size with neat design, it is remarkably smaller than other traditional RO systems with ordinary size, which helps to save storage space under kitchen cabinet. 
  • Low Drain Ratio & Longer Filter Life: Adopting water-saving technology, RO-K3-A features with 1:1 super low drain ratio @70psi. For each cup of pure RO water, only 1 cup of waste water will be produced (Most traditional RO systems produce 3 cups). The 1st stage uses pleated composite filter, it has 3 times longer lifespan and better removing capability, thus prolongs the lifespan of RO membrane and cut down replacement expenses.
  • DIY Install & Super Thick Housing: The RO filtration system comes with everything you need for installation. Also comes with 3/8" to 1/2" converter set, thus it is compatible with standard US kitchens. Adopting twist design, all filter cartridges can be easily changed with the wrench provided. By setting next filter replacement date on the lid, you can forget the guesswork. Filter housing is thickened, which has passed pressure resistance test, thus make sure it is sturdy enough for heavy duty and long-term usage. 
  • Fast Water Flow & Multi-Usage: Equipped with a pressure tank, water flow can reach 0.8GPM, you can instantly fill up a 330ml cup of water in 7 seconds! The capacity of RO-K3-A is 100 gallons per day. It doubles the output of traditional RO systems! By using Frizzlife IMC-1 ice maker kit, reverse osmosis water filter can simultaneously serve both the kitchen sink and refrigerator. 
  • Brand: Frizzlife
  • Availability: In Stock
  • SKU: ROK3A

under sink water filter
Superb Filtration Performance
  • RO-K3-A under sink water filter system utilizes 7 layers of high grade filtration elements, thus guarantees each drop of drinking water has been filtered thoroughly and effectively.
  • RO water will pass through the post filter before going to your cup, which balances the PH to alkaline level and add back essential minerals.
Alkaline & Remineralization
  • Traditional RO systems not only remove essential minerals from water together with contaminant, but also produce slightly acidic RO water. The last stage (TD-9) of RO-K3-A RO system adjusts PH level to more than 7.5, and also restores health-benefiting minerals to RO water.
  • It is one step beyond pure water only towards ultimate health in long term.
under sink water filter water filter system reverse osmosis reverse osmosis system
under sink water filter water filter system reverse osmosis reverse osmosis system
Lower Drain Ratio
  • Thanks to advanced water-saving technology, RO-K3-A only generates 1 cup of waste water for each cup of RO water, which saves you at least 70% water!
  • Makes your water bill much more affordable.
Reinforced Construction
  • RO-K3 under counter water filtration system thickens the filter housing, thus prevent any crack or leaking issue. The reinforced construction gives you peace of mind even after long-term usage.
under sink water filter water filter system reverse osmosis reverse osmosis system
under sink water filter water filter system reverse osmosis reverse osmosis system
Easy Install & 3X Service Life
  • Following the thorough manual and online tutorial video, the filter system can be completely installed by yourself in a few minutes. No plumber required. 
  • The twist-in design makes the filter replacement a breeze. Just use the wrench provided to finish the replacement work effortlessly. Please press the red button on the lid to release the air pressure inside before starting to use.
0.8GPM Fast Flow & Dedicated Faucet
  • RO-K3-A under sink water purifier system is capable of producing 100 gallons RO water per day, which is sufficiently to serve the daily water needs of family.
  • Equipped with a pressure tank, the water flow @0.8GPM is fast and stable. You can always get a 330ml cup of fresh RO water in 7 secs!
under sink water filter water filter system reverse osmosis reverse osmosis system
under sink water filter water filter system reverse osmosis reverse osmosis system
Neat Design & No Electricity Required
  • Adopting neat design, the size of RO-K3 water filtration is remarkably smaller. The small footprint ensures the system can perfectly suit with most kitchen under sink and save more storage space for you.
  • RO-K3 under sink RO filtration does NOT require electricity to work. Besides cutting down your electricity bills, we are also contributing to energy saving together!
Fresh Water For Multiple Use
  • The ultra pure RO water coming out from RO-K3 under sink RO system can also go to your refrigerator and ice maker!
  • IMC-1 Ice Maker Kit can help you achieve this multi-usage installation.
under sink water filter water filter system reverse osmosis reverse osmosis system

Q: Why there are many white bubbles in the water?

A: Normally for the first time use of the RO system, the water seems to have white bubbles in it,

which is normal and totally drinkable. It is because when the pump is pressurizing the water, it

will pressurize the air at the same time. It will make the air molecules smaller, thus the solubility

further increases. The air can’t be released at that time because of the pressure in the RO system.

However, when you turn on the tap to get a cup of water, the pressure of air is released. So you

will see a huge number of bubbles in the water. It looks cloudy and white, but they are just

bubbles. After you put the water still for a while, all bubbles will be gone, the water is totally

good for drinking.


Q: Why TDS result is not that low? 

A: It is because the TD-9 filter, the post filter, adds the minerals to the water. Normally the TD-9

will increase the TDS by 10-70 ppm, and at that time the water is very good, the PH level will be

more than 9.


Q: Why TDS is higher at the beginning, but back to normal range after about one minute?

A: Osmosis is a natural phenomenon happens in all RO system, no matter if you have a conventional

RO system or tankless RO system. When the RO system starts to work, pressure from the pump

overcomes natural osmotic pressure, forcing feed water through the RO membrane that removes

the impurities. When the RO system stops working, the pump stops offering pressure as well. At

that time, because of different concentrations, a small fraction of ions will enter into pure water

and cause TDS to rise by a small amount. However, even if the TDS reading is a little high at the

beginning, the quality water is still unbeatable by any other filtration methods including carbon,

KDF, ceramic, UF, UV, etc.. The water is totally good to drink and you don’t have to wait for about

1 minute to get the water, since the whole system will not release any harmful substances to the

water. The TDS removing rate for RO-K3 is about 94-95%, if your incoming TDS is high, the outlet

TDS will be high too.


Q: If I don’t want to use the TD-9, how should I disconnect it?

A: Simply disconnect the TD-9 from tRO-K3, then your water will not be alkalined or remineralizaed. 


Q: My granite is thicker than 1.5 inch and the faucet stem is not long enough, what should I do?

A: Please feel free to contact us at to claim for a longer thread stem.


Model No.RO-K3-AFilter Cartridge InsideK3-F-800, K3-G-100, TD-9
RO-K3 Dimensions5.2*5.2*14.9 inchesTank Dimensions11*11*14.7 inches
TD-9 Dimensions2.1*2.1*7.9 inchesFlow Rate

100 gallons(@60psi of

inlet pressure ,@77ºF)

Working PressureMin.25psi Max.85psiOperating TemperatureMin.39ºF, Max 100ºF

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