---
product_id: 691269370
title: "Purewell PF-3-FL Black 4-Stage Composite Carbon and Fluoride Reduction Filters, Compatible with Berkey® Big+, ProOne® Big+ Gravity Water Filter Systems and Purewell Systems (2 Pack, K Series)"
brand: "purewell"
price: "45.72 OMR"
currency: OMR
in_stock: true
reviews_count: 8
category: "Purewell"
url: https://www.desertcart.com.om/products/691269370-purewell-pf-3-fl-black-4-stage-composite-carbon-fluoride
store_origin: OM
region: Oman
---

# 0.01μm ultrafiltration membrane 6,000 gallons lifespan 4-stage advanced filtration Purewell PF-3-FL Black 4-Stage Composite Carbon and Fluoride Reduction Filters, Compatible with Berkey® Big+, ProOne® Big+ Gravity Water Filter Systems and Purewell Systems (2 Pack, K Series)

**Brand:** purewell
**Price:** 45.72 OMR
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with Purewell’s elite 4-stage filtration!

## Quick Answers

- **What is this?** Purewell PF-3-FL Black 4-Stage Composite Carbon and Fluoride Reduction Filters, Compatible with Berkey® Big+, ProOne® Big+ Gravity Water Filter Systems and Purewell Systems (2 Pack, K Series) by purewell
- **How much does it cost?** 45.72 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/691269370-purewell-pf-3-fl-black-4-stage-composite-carbon-fluoride)

## Best For

- purewell enthusiasts

## Why This Product

- Trusted purewell brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Next-Level Purity:** Removes 99.9% chlorine, rust, heavy metals + 90% fluoride for crystal-clear hydration.
- • **Risk-Free Upgrade:** Easy priming and free replacement guarantee keep your water flowing flawlessly.
- • **Precision Filtration:** Ultra-fine 0.01 micron pores outperform typical filters by 20x—because your health deserves it.
- • **Seamless Compatibility:** Perfect fit for Berkey® Big+, ProOne® Big+, and Purewell systems—no leaks, no fuss.
- • **Long-Lasting Performance:** Each 2-pack filters up to 6,000 gallons—stay worry-free for months on end.

## Overview

The Purewell PF-3-FL is a premium 4-stage composite water filter pack designed for Berkey® Big+, ProOne® Big+, and Purewell gravity systems. Featuring a 0.01μm hollow fiber ultrafiltration membrane, activated carbon, silver ion barrier, and fluoride reduction media, it removes 99.9% of contaminants including chlorine, heavy metals, and 90% fluoride. Certified NSF/ANSI 42 and lead-free, each filter pair delivers up to 6,000 gallons of clean, fresh water with a perfect leak-proof fit and easy installation.

## Description

desertcart.com: Purewell PF-3-FL Black 4-Stage Composite Carbon and Fluoride Reduction Filters, Compatible with Berkey® Big+, ProOne® Big+ Gravity Water Filter Systems and Purewell Systems (2 Pack, K Series) : Tools & Home Improvement

Review: Great value and works perfectly with my Big Berkey - These activated carbon water filters are a great alternative; they’re compatible with my Big Berkey system and work just as well. Easy to prime like any standard gravity filter, and once installed, they deliver clean, fresh-tasting water. Great value for a 2-pack, and so far they’ve performed exactly as expected. Highly recommend for anyone looking for a reliable and budget-friendly option!
Review: Well-designed, good fit, fast filtering, and a huge money-saver over original Berkey filters - These are fantastic filters -- especially for the price. I was using original Berkey water filters for years -- just scrubbing the outside using a scrubby when the filtration slowed down. But, as anyone knows who has a Berkey, they are EXPENSIVE. These seem to do just as good a job, were easy to prime and install, and filter the water a whole lot faster than my OLD set of original Berkey filters -- especially as I installed four vs. the original two I was using. It will reduce the overall, available water volume some, but it will filter much faster if you use four vs. only two filters. They seal well and appear to be of high quality. They are the correct size for the unit and fit perfectly. I've only filtered one batch, which you're supposed to dispose of and not drink as it's still clearing the original dust from manufacturing. Same with original Berkey filters. I plan to test this with a water TDS sensor and various contaminant tests to see how well it did. I'm on well water so I want to ensure my drinking water is extra clean, and it looks like these will provide clean, fresh water for years to come.

## Features

- [Advanced 4-Stage Filtration] Certified by NSF/ANSI 42, our composite filter features an advanced 4-stage filtration technology. It combines a 0.01μm hollow fiber ultrafiltration membrane, fluoride removal media, a silver ion barrier, and high-density activated carbon block. This design removes 99.9% of chlorine, rust, sediment, organic compounds, and heavy metals, plus 90% fluoride. Compliant with NSF/ANSI 372 lead-free standards, it ensures safety and reliability for everyday use.
- [Innovative Fluoride Removal Technology] This black composite filter combines high-quality activated carbon and fluoride removal material (not harmful alumina). It effectively removes up to 90% of fluoride while ensuring safe use. Additionally, the filter features an ultra-fine pore size of 0.01 microns, a significant improvement over the typical 0.2 microns found in other brands, effectively removing 99.99% of contaminants, providing safer drinking water and significantly reducing health risks.
- [Compatible Models] The Purewell 4-Stage Composite Filters can be replacement for ProOne Big+ or Big II Series and Berkey BB9-2 black filters, Travel, Big, Royal, Imperial, Light, Crown Berkey Series. Thanks to its exquisite design, this filter achieves great fit and no leakage. The water filter is not sourced by or sponsored by Berkey or ProOne. Purewell is an independent brand.
- [Extended Lifespan] Each pair of composite filters provides up to 6,000 gallons of fresh water. For optimal performance, we recommend replacing the filter every 6,000 gallons, though this may vary based on your water quality. Note: TDS levels do not fully indicate water quality, and our filters are not designed to lower TDS levels.
- [Risk-free Purchase] For optimal filtration, please follow the pre-filtration instructions in the manual before installing the filter. If you experience clogging, slow flow, unusual odors, or compatibility issues, please contact us immediately for a free, quick replacement service.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #110,356 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #100 in Replacement Countertop Water Filters |
| Brand | Purewell |
| Customer Reviews | 4.8 out of 5 stars 19 Reviews |
| External Testing Certification | NSF |
| Item Weight | 0.67 Kilograms |
| Material | Activated Carbon, Silver Ion, Hollow Fiber UF Membrane, Fluoride Reduction Material |
| Product Benefits | Reduce Chlorine and Fluoride |
| Product Dimensions | 3"D x 6"W x 9"H |

## Product Details

- **External Testing Certification:** NSF
- **Item Weight:** 0.67 Kilograms
- **Material:** Activated Carbon, Silver Ion, Hollow Fiber UF Membrane, Fluoride Reduction Material
- **Product Benefits:** Reduce Chlorine and Fluoride
- **Product Dimensions:** 3"D x 6"W x 9"H

## Images

![Purewell PF-3-FL Black 4-Stage Composite Carbon and Fluoride Reduction Filters, Compatible with Berkey® Big+, ProOne® Big+ Gravity Water Filter Systems and Purewell Systems (2 Pack, K Series) - Image 1](https://m.media-amazon.com/images/I/71FJMJUgoQL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great value and works perfectly with my Big Berkey
*by M***E on July 2, 2025*

These activated carbon water filters are a great alternative; they’re compatible with my Big Berkey system and work just as well. Easy to prime like any standard gravity filter, and once installed, they deliver clean, fresh-tasting water. Great value for a 2-pack, and so far they’ve performed exactly as expected. Highly recommend for anyone looking for a reliable and budget-friendly option!

### ⭐⭐⭐⭐⭐ Well-designed, good fit, fast filtering, and a huge money-saver over original Berkey filters
*by P***. on May 8, 2025*

These are fantastic filters -- especially for the price. I was using original Berkey water filters for years -- just scrubbing the outside using a scrubby when the filtration slowed down. But, as anyone knows who has a Berkey, they are EXPENSIVE. These seem to do just as good a job, were easy to prime and install, and filter the water a whole lot faster than my OLD set of original Berkey filters -- especially as I installed four vs. the original two I was using. It will reduce the overall, available water volume some, but it will filter much faster if you use four vs. only two filters. They seal well and appear to be of high quality. They are the correct size for the unit and fit perfectly. I've only filtered one batch, which you're supposed to dispose of and not drink as it's still clearing the original dust from manufacturing. Same with original Berkey filters. I plan to test this with a water TDS sensor and various contaminant tests to see how well it did. I'm on well water so I want to ensure my drinking water is extra clean, and it looks like these will provide clean, fresh water for years to come.

### ⭐⭐⭐⭐⭐ Just as good as the Berkey brand of Black Filters at a far lower cost!
*by I***S on May 17, 2025*

These non-OEM black water filters are the perfect replacement filters for use in a Big Berkey water filtration system. At around $40 a pair this is a no-brainer due to the fact that Berkey is no charging almost $200 for a set on their web site and almost $300 on Amazon for a set… I don’t understand why Berkey feels the need to overcharge people for something that can clearly be made for a much lower price and offered for sale as in this case with these aftermarket filters… The bottom line is that there is zero difference between these $40 black filters and the overpriced Berkey filters…

## Frequently Bought Together

- Purewell PF-3-FL Black 4-Stage Composite Carbon and Fluoride Reduction Filters, Compatible with Berkey® Big+, ProOne® Big+ Gravity Water Filter Systems and Purewell Systems (2 Pack, K Series)
- Purewell 2.25G Gravity Water Filter System with Water Level Window, 3-Stage 0.01μm Ultra-Filtration Stainless Steel Countertop System with 2 Filters and Stand, Reduce 99% Chlorine, PW-KS
- Purewell 3-Stage 0.01μm Ultra-Filtration Gravity Water Filter System, NSF/ANSI 42&372 Certification, 304 Stainless Steel Countertop System with 2 Filters and Stand, Reduce 99% Chlorine, 2.25G, PW-OB

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-18*