Axtron CTO Slim 20 Inch – Activated Carbon Block Filter Cartridge, Made in Vietnam
The Axtron CTO Slim 20 Inch is an NSF certified activated carbon block (CTO) filter cartridge, Made in Vietnam. In the local market, it's commonly known as the "jali wala filter" — named for the netted mesh wrap visible on its exterior. Working the same way as our 10-inch Axtron CTO cartridge, this 20-inch slim version delivers the same chlorine and odor removal in a longer cartridge suited to slim 20-inch housings.
What Axtron CTO Slim 20 Inch Does
Per the manufacturer's stated features on the product label, this cartridge:
- Removes chlorine, surplus organic compounds, and gases that cause odor in water
- Protects RO membranes from clogging residues
It works as a dechlorination and taste/odor-improvement stage — typically installed as a pre-filter ahead of an RO membrane, protecting the membrane from chlorine damage while improving the taste, smell, and clarity of the water passing through.
What Axtron CTO Slim 20 Inch Made Of
Per the product label, the composition is coal-based carbon and a de-chlorination material. Coal-based activated carbon is a well-established, widely used source for activated carbon in water treatment, working through adsorption — contaminant molecules bond to the carbon's porous surface as water passes through, rather than being mechanically strained out.
Certified Quality
This cartridge carries NSF certification, a Water Quality Association member mark, and ISO 9001:2015 certification — all confirmed directly from the product label.
Technical Specifications
| Specification | Detail |
|---|---|
| Brand | Axtron |
| Filter Type | Activated Carbon Block (CTO) |
| Local Market Name | "Jali Wala Filter" (mesh-wrapped filter) |
| Composition | Coal-based carbon + de-chlorination material |
| Certification | NSF certified; Water Quality Association member; ISO 9001:2015 |
| Size | 20 Inch length (Slim, standard 2.5" diameter) |
| Use Term | 3 months (10,000 Litres) |
| Max Flow Rate | 100 L/H |
| Use Pressure | 5 Bars |
| Origin | Made in Vietnam |
| Removes | Chlorine, organic compounds, odor-causing gases |
| Does Not Remove | Dissolved salts (TDS), heavy metals, bacteria, or viruses |
Installation Note (Important)
Per the manufacturer's instruction printed on the cartridge: wash/flush the cartridge before water flows into the RO membrane. This clears any initial residue from the filter media before it reaches the membrane stage.
Applications
- Pre-filtration/dechlorination stage in domestic and semi-commercial RO systems
- Slim 20-inch housings (2.5" diameter standard)
- Homes and small businesses on municipal or borewell water with noticeable chlorine taste or odor
- Multi-stage RO systems needing a longer-duration carbon stage than the standard 10-inch option
Frequently Asked Questions
Q1: What does the Axtron CTO Slim 20 Inch remove?
Chlorine, surplus organic compounds, and gases that cause odor in water — per the manufacturer's stated features on the product label.
Q2: What is this filter made of?
Coal-based activated carbon combined with a de-chlorination material, per the product specifications.
Q3: Why is it called the "jali wala filter"?
It's a local market name referring to the netted mesh wrap visible on the cartridge's exterior.
Q4: Is this filter certified?
Yes — it carries NSF certification, is a Water Quality Association member product, and is ISO 9001:2015 certified, all printed on the label.
Q5: How long does this cartridge last?
Rated for 3 months or 10,000 litres, whichever comes first, per the manufacturer's specification.
Q6: What's the maximum flow rate and pressure?
100 L/H maximum flow, at a use pressure of 5 bars.
Q7: Do I need to do anything before installing it?
Yes — the manufacturer specifies washing/flushing the cartridge before water flows into the RO membrane, to prevent residue from reaching the membrane.
Q8: What size housing does this fit?
Standard slim 20-inch housings (2.5" diameter).
Q9: Is delivery available across Pakistan?
Yes, Axtron Pakistan offers nationwide delivery, including Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad, and Multan.