







💧 Elevate your hydration game with precision-pure water!
The Stokk RS1-RO400 is a high-performance replacement filter designed exclusively for the S1 Reverse Osmosis System. Featuring a 0.0001-micron membrane, it removes over 99% of more than 1000 contaminants including harmful PFAS chemicals, ensuring superior water purity and taste. With a lifespan of 12 to 24 months and effortless twist-to-install design, it offers long-lasting, hassle-free filtration that keeps your water crisp, clean, and safe.























| ASIN | B0CSDV9YNL |
| Best Sellers Rank | #133,866 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #910 in Replacement Under-Sink Water Filters |
| Brand | Stokk |
| Customer Reviews | 4.6 4.6 out of 5 stars (79) |
| Date First Available | January 15, 2024 |
| EU Spare Part Availability Duration | 2 Years |
| Item Weight | 2.55 pounds |
| Item model number | S1 |
| Manufacturer | JIN FANG TECHNOLOGY (HONG KONG) LIMITED |
| Material | Carbon Fiber |
| Number of Items | 1 |
| Product Benefits | Reduces various contaminants, ensuring superior water quality and safety |
| Product Dimensions | 3.5"D x 3.5"W x 12.7"H |
| Set Name | S1 Series |
M**N
Good refill for RO
Works great
R**R
The Strokk water filter system, and their replacement filters are top of the mark
This is our third filter from the Strokk company and the filters, while expensive, really filter water. Ours last about 6 months because we us a lot of filtered water. Most people would probably go through only one a year. Strokk is a great little company that builds wonderful water systems, and filters. We will always buy from this company no matter how many water filter companies there are. I have contacted them and they are the salt of the earth.
B**Y
Clean clear water!
Works well, water tastes good and is clear! Filters easy to replace. Please keep in mind to replace both filters at same time and reset per instructions.
K**Y
good item
works
A**Y
Working well for RMS-WP-RO400
I bought a RMS-WP-RO400 unit last year and the company does not have any replacement filters for sale (although I would imagine there filters for the RO500 would work). This appears to be working well in the old unit.
A**S
Good Product
Good Product.
C**R
Only lasted 6 weeks!!!
I replaced this in early May. Light is on to replace again!!!! There doesn't seem to be any customer service and when I spoke to them in May about having to replace so soon, they said these filters last 4-6 months. The listing says 6-12 and the reality is 2 months. I'm researching replacing this system. Don't buy the system.
E**.
Quick & Easy Install
Extremely easy to install. The system is very reliable and quiet.
Trustpilot
2 weeks ago
3 weeks ago