--- product_id: 51610729 title: "iSpring F28K75 RO Replacement Set, NSF Certified, 3-Year, 28-Pc, Alkaline" brand: "ispring" price: "€ 606.67" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.hr/products/51610729-ispring-f28k75-ro-replacement-set-nsf-certified-3-year-28 store_origin: HR region: Croatia --- # 6-stage RO filtration Alkaline mineral pH balance 28-piece 3-year supply iSpring F28K75 RO Replacement Set, NSF Certified, 3-Year, 28-Pc, Alkaline **Brand:** ispring **Price:** € 606.67 **Availability:** ✅ In Stock ## Summary > 💧 Elevate your hydration game with pure, balanced water—because your health deserves the best! ## Quick Answers - **What is this?** iSpring F28K75 RO Replacement Set, NSF Certified, 3-Year, 28-Pc, Alkaline by ispring - **How much does it cost?** € 606.67 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/51610729-ispring-f28k75-ro-replacement-set-nsf-certified-3-year-28) ## Best For - ispring enthusiasts ## Why This Product - Trusted ispring brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Lasting Value:** A comprehensive 3-year, 28-piece replacement set ensures uninterrupted access to fresh, clean water without frequent reordering. - • **Trusted & Certified:** NSF and ANSI certified for guaranteed safety and performance, backed by rave customer support that keeps you worry-free. - • **Effortless Maintenance:** Quick push-fit connectors on updated filters make replacements fast and hassle-free—no plumber required. - • **Crystal Clear Hydration:** Experience ultra-pure water with advanced 6-stage reverse osmosis filtration that removes harmful pollutants while preserving essential minerals. - • **Balanced Alkalinity Boost:** Restores natural calcium, magnesium, and potassium ions to elevate your water’s pH for a healthier, more refreshing taste. ## Overview The iSpring F28K75 is a 3-year, 28-piece replacement filter set designed for 6-stage reverse osmosis systems. It includes sediment, granular activated carbon, carbon block, post-carbon, and alkaline mineral filters that not only purify water by removing contaminants but also restore essential minerals to balance pH. Certified by NSF and ANSI, this set features quick-connect fittings for easy installation and delivers consistently clean, great-tasting water ideal for health-conscious professionals. ## Description Enjoy clean, safe, and great-tasting water with this 3-year supply of 6-stage RO filters. The alkaline mineral filter restores healthy minerals for balanced pH. Review: Best domestic water filter backed by truly *Excellent* Customer service - I've had an iSpring RCC7AK 6-stage filter system since November 2017. It was fitted by my local Kitchen & Bathroom company, alongside a new sink/tap and a Harvey whole-house water filter. It has provided brilliantly clear and tasty drinking water since installation, at an annual price of around what we used to pay for bottled tap water. At the time, I also bought a water quality hardness test meter - which showed a TDS (total dissolved solids) value of around 30, compared with tap water's 300. I'm so used to our lovely filtered water that a recent stay at a friend's house gave me a nasty shock when I drank her unfiltered tap water - I could both smell and taste the chlorine! Yuk. Anyway, I'm now starting my second set of replacement filters - best bought as a 3 year supply when the desertcart price is lowest - and found that one of the cartridge filters had a small leak from a screw-in connector; unscrewing it and remaking the joint with PTFE tape just didn't fix it, so I asked for help from iSpring Europe. A very nice man named Don asked me to register my problem on their American website (where I could attach an image of my replacement filter order from desertcart) and then he helped me by sending a set of replacement fixtures, plus some spare connecting pipe. A big bag of connectors (more than I needed, really) came all the way from the USA by Fedex in 4 days and has *completely* fixed the problem. I fitted it in minutes, along with some of the replacement pipe (because I predicted that the angle of the exit pipe in relation to the next filter in the set would probably be different - and it was). No leak, no worries. Wonderful. Now, in case anyone is thinking "well it shouldn't leak in the first place" my response is that this connector has been made/remade several times and is the only part that has ever had a problem. Every other joint has been 100% water-tight. More importantly, I understand the the latest versions of the cartridge-type filters already have this fitting built into the filter - so when I buy my next replacement filter set, all I will have to do is to push-fit in the connecting tube, making changing them very simple indeed! So, if you are looking for a multi-part (and therefore professionally engineered) drinking water filter system, look no further than iSpring. In my view, they sell the best comprehensive water filter which is compact, efficient and delivers a very cost-effective way to drink purified water - with absolutely no plastic bottle waste! On top of that, their customer service is *amazing*. You simply can't do better. Review: Good value for money filters set. - I've decided to buy 3 year pack of filters as they are good value for money. When I received the parcel I was really concerned about 5th and 6th stage filters as the fitting is different than in my system, and about the RO as it is packed in dry non vacuum sealed packing with no GPD label. I have contacted the iSpring support and they responded very quickly with helpful information. Even though my iSpring filter system is only 4 months old, the 5th and 6th stage filters were upgraded with quick fitting and iSpring offered to send me free of charge proper adapters so I will be able seamlessly use new type filters in my system. The RO is packed in dry packing for longer storage and have correct 75GPD rating. I like my iSpring filter system and I'm really pleased with vendor's support, I can't really say much about the filters apart from them being genuine product. I'm going to replace filters in 2 months so in case of anything worthy of saying, I'll update the review. ## Features - Individually wrapped 1-year high capacity filter replacement cartridge pack for 6-stage RO systems - Experience clean, safe, and good-tasting water every time you turn on the faucet. Enjoy crystal clear ice cubes, fresher tea and coffee, better tasting foods, healthier baby formula – even better than most bottled water - The RO membrane removes not only harmful pollutants but also a few helpful minerals. As a result, a standard 5 stage RO system produces slightly acidic water with a pH of 7. 0 or below. Alkaline mineral filter produces alkaline water with restored healthy minerals such as natural calcium, magnesium, and potassium ions, which ph-balances the RO water. - 9 pieces of 10" x 2. 5" replacement water filters included: 2x sediment filters, 2x granular activated carbon filters, 2x carbon block filters, 1x post-carbon filter, and 2x alkaline filters - This filter pack does NOT include an RO membrane. Updated FA15 alkaline mineral filters and FT15 post-carbon filters are built with a secure push-fit quick connection, which allows faster filter replacement. If you have trouble installing the filters, please refer to the user manual or contact us ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00BNGRIX2 | | Benefits | Provides clean, safe, and great-tasting water | | Best Sellers Rank | 40,825 in DIY & Tools ( See Top 100 in DIY & Tools ) 37 in Replacement Under-Sink Water Filters | | Brand | iSpring | | Brand Name | iSpring | | Compatible Water Purifier Models | Aquaphor Crystal | | Customer Reviews | 4.7 out of 5 stars 670 Reviews | | EU Spare Part Availability Duration | 3 Years | | External Testing Certification | ANSI | | External testing certification | ANSI | | Global Trade Identification Number | 00662425058525 | | Included Components | water filters | | Item Dimensions D x W x H | 6D x 11W x 22H centimetres | | Item Type Name | iSpring F28K75 3-Year Filter Replacement Supply Set For 6-Stage Reverse Osmosis RO Water Filtration Systems with Alkaline Mineral Filter | | Item Weight | 10.2 Kilograms | | Item weight | 10.2 Kilograms | | Manufacture Year | 2016 | | Manufacturer | iSpring | | Manufacturer Part Number | F28K75 | | Material | carbon | | Material Type | carbon | | Model Number | F28K75 | | Number of Items | 28 | | Product benefits | Provides clean, safe, and great-tasting water | | Product dimensions | 6D x 11W x 22H centimetres | | Set Name | 3-Year Replacement Supply Set | | UPC | 662425058525 | | Unit Count | 1.0 count | ## Product Details - **External testing certification:** ANSI - **Item weight:** 0.01 Ounces - **Material:** carbon - **Product benefits:** Provides clean, safe, and great-tasting water - **Product dimensions:** 6D x 11W x 22H centimetres ## Images ![iSpring F28K75 RO Replacement Set, NSF Certified, 3-Year, 28-Pc, Alkaline - Image 1](https://m.media-amazon.com/images/I/81uosMQ4JbL.jpg) ![iSpring F28K75 RO Replacement Set, NSF Certified, 3-Year, 28-Pc, Alkaline - Image 2](https://m.media-amazon.com/images/I/71gCSqgaO1L.jpg) ![iSpring F28K75 RO Replacement Set, NSF Certified, 3-Year, 28-Pc, Alkaline - Image 3](https://m.media-amazon.com/images/I/71s13-IdA-L.jpg) ![iSpring F28K75 RO Replacement Set, NSF Certified, 3-Year, 28-Pc, Alkaline - Image 4](https://m.media-amazon.com/images/I/71L1eHpcH9L.jpg) ![iSpring F28K75 RO Replacement Set, NSF Certified, 3-Year, 28-Pc, Alkaline - Image 5](https://m.media-amazon.com/images/I/71E4eODT7FL.jpg) ## Available Options This product comes in different **Model** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best domestic water filter backed by truly *Excellent* Customer service *by T***. on 24 May 2021* I've had an iSpring RCC7AK 6-stage filter system since November 2017. It was fitted by my local Kitchen & Bathroom company, alongside a new sink/tap and a Harvey whole-house water filter. It has provided brilliantly clear and tasty drinking water since installation, at an annual price of around what we used to pay for bottled tap water. At the time, I also bought a water quality hardness test meter - which showed a TDS (total dissolved solids) value of around 30, compared with tap water's 300. I'm so used to our lovely filtered water that a recent stay at a friend's house gave me a nasty shock when I drank her unfiltered tap water - I could both smell and taste the chlorine! Yuk. Anyway, I'm now starting my second set of replacement filters - best bought as a 3 year supply when the Amazon price is lowest - and found that one of the cartridge filters had a small leak from a screw-in connector; unscrewing it and remaking the joint with PTFE tape just didn't fix it, so I asked for help from iSpring Europe. A very nice man named Don asked me to register my problem on their American website (where I could attach an image of my replacement filter order from Amazon) and then he helped me by sending a set of replacement fixtures, plus some spare connecting pipe. A big bag of connectors (more than I needed, really) came all the way from the USA by Fedex in 4 days and has *completely* fixed the problem. I fitted it in minutes, along with some of the replacement pipe (because I predicted that the angle of the exit pipe in relation to the next filter in the set would probably be different - and it was). No leak, no worries. Wonderful. Now, in case anyone is thinking "well it shouldn't leak in the first place" my response is that this connector has been made/remade several times and is the only part that has ever had a problem. Every other joint has been 100% water-tight. More importantly, I understand the the latest versions of the cartridge-type filters already have this fitting built into the filter - so when I buy my next replacement filter set, all I will have to do is to push-fit in the connecting tube, making changing them very simple indeed! So, if you are looking for a multi-part (and therefore professionally engineered) drinking water filter system, look no further than iSpring. In my view, they sell the best comprehensive water filter which is compact, efficient and delivers a very cost-effective way to drink purified water - with absolutely no plastic bottle waste! On top of that, their customer service is *amazing*. You simply can't do better. ### ⭐⭐⭐⭐⭐ Good value for money filters set. *by M***A on 24 October 2019* I've decided to buy 3 year pack of filters as they are good value for money. When I received the parcel I was really concerned about 5th and 6th stage filters as the fitting is different than in my system, and about the RO as it is packed in dry non vacuum sealed packing with no GPD label. I have contacted the iSpring support and they responded very quickly with helpful information. Even though my iSpring filter system is only 4 months old, the 5th and 6th stage filters were upgraded with quick fitting and iSpring offered to send me free of charge proper adapters so I will be able seamlessly use new type filters in my system. The RO is packed in dry packing for longer storage and have correct 75GPD rating. I like my iSpring filter system and I'm really pleased with vendor's support, I can't really say much about the filters apart from them being genuine product. I'm going to replace filters in 2 months so in case of anything worthy of saying, I'll update the review. ### ⭐⭐⭐⭐⭐ Great water filters *by J***N on 25 April 2018* Very happy with the filter set. Does the job very well. You only realise how good they are when you drink water away from home. Not cheap, but well worth the money. Good seller. +++++ ## Frequently Bought Together - iSpring F28K75 3-Year Replacement Supply Set for 6-Stage Reverse Osmosis RO Water Filtration Systems with Alkaline Mineral Filter, 28 Piece, White - iSpring RCC7AK 6 Stage Reverse Osmosis Water System Under Sink with Alkaline Remineralization, NSF Certified, 75 GPD, TDS Reduction --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/51610729-ispring-f28k75-ro-replacement-set-nsf-certified-3-year-28](https://www.desertcart.hr/products/51610729-ispring-f28k75-ro-replacement-set-nsf-certified-3-year-28) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-09*