Drinking Water Cartridge

Let's explore the most common types of water filter cartridges, their specific functions, and when to replace them.

1. PP Cotton Filter Cartridge

• Material: Melt-blown polypropylene (non-toxic, odorless)
• Filtration Accuracy: 0.5μm – 20μm
• Function: First-stage filter that removes large particles such as:
• Sediment
• Rust
• Colloids
• Insect eggs
• Replacement Frequency: Every 3–6 months
• Bonus: Protects downstream filters

2. Granular Activated Carbon (GAC) Filter

• Material: Coconut shell & fruit shell carbon
• Function: Absorbs and removes:

Residual chlorine

Organic matter

Pesticides

Odors and discoloration

• Replacement Frequency: Every 6–8 months

3. Carbon Rod-Activated Carbon Filter (Compressed Carbon)

• Material: Coal-activated carbon + coconut shell carbon
• Function: Removes chemical residues, chlorine, odors, and color. Also:

Protects the RO membrane

Extends filter life

• Replacement Frequency: Every 6–8 months

4. RO (Reverse Osmosis) Membrane Filter

• Filtration Accuracy: 0.0001 microns
• Function: Removes:

Heavy metals

Bacteria & viruses

Organic & inorganic contaminants

• Replacement Frequency: Every 18–36 months
• Note: RO membranes produce some wastewater, which is normal.

5. CTO (Compressed Carbon Block) Filter

• Often placed before or after the RO membrane for additional taste and odor control.
• Function: Improves water taste and appearance
• Replacement Frequency: Every 6–8 months

6. Post-Activated Carbon (T33) Filter

• Material: High-grade coconut shell carbon, sometimes with silver for antibacterial effect
• Function:

Final polish for better taste

Inhibits bacterial growth

• Replacement Frequency: Every 6–12 months

Signs It's Time to Replace:

1. Reduced water output
2. TDS levels increase
3. Filter indicator light turns red
4. RO membrane usage exceeds 2 years
5. Wastewater pressure rises above 6kg

• Higher costs: Old filters strain newer ones, causing premature wear.
• Lower performance: Clogged filters reduce water flow and system efficiency.
• Health hazards: Dirty filters can harbor bacteria and reintroduce contaminants into your water.

• Household water purifiers
• Office water dispensers
• Under-sink filtration systems
• Reverse osmosis systems

Pro Tip:

To extend your water purifier's lifespan and keep your drinking water safe and great-tasting, always follow a regular filter replacement schedule and use high-quality original cartridges.

We offer a complete range of customizable, high-quality water purifier filter cartridges for home and commercial use. With our in-house production, strict QC, and over 10 years of industry experience, we ensure top performance and fast delivery.

Contact now

Contact us today to order in bulk or customize water filter cartridges for your product line.

Q1: What is your MOQ?

A: Our MOQ is 50PCS per order. For first trial orders or some regular products, the quantity can be 30 pcs. Meanwhile, we stock some products in the USA and Germany, and you can also directly buy from us for small quantities if we have overseas stock.

Q2: Can your factory print our logo/brand on the product?

A: Our factory can laser print the customer's logo on the product. Customers need to provide us with a logo usage authorization letter to allow us to print the customer's logo on the products.

Q3. What certificate do you have?

A: We have passed the international approval of UL, CB, CE, ERP, WRAS, UKCA, RoHS, REACH, PAHS, and SCCP.

Q4: Can I visit you?

A: Yes. Our factory is in Xiamen City, Fujian, China. Welcome to visit our factory. I look forward to meeting with you.

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