
How Fast Reverse Osmosis Water is Created from a
Reverse Osmosis Water Filter
Filtration Stages
Benchtop Reverse Osmosis System with Standard Alkaline (RO 4000) is a five stage filtration system that enhances the quality of your drinking water.

STAGE 1 - 5 Micron Polyspun Sediment Filter (Made in USA)
The first filter in this filtration system is built from spun polypropylene which effectively removes sediment, dirt, sand, rust or any particles from your drinking water to protect the following cartridges which allows them to work at their optimum.
STAGE 2 - 5 Micron Carbon Filter (Made in USA)
This granular activated carbon (GAC) filter removes organic pollutants from your drinking water. At this stage, chlorine & chemicals are removed from the drinking water which helps to protect the membrane also.
STAGE 3 - High Purity (0.0005 micron) Membrane (Made in USA) Membrane Ro Filmtec 75 TFC
The third stage in this filtration system is the 75 GPD ultra fine TFC RO membrane, which carefully filters out viruses, fluoride, heavy metals, lead, copper, mercury any many other contaminants.
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Sodium 92-98%
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Calcium 93-98%
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Magnesium 93-98%
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Potassium 92-96%
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Iron 96-98%
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Manganese 96-98%
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Radioactivity 93-97%
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Silica 80-90%
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Boron 50-70%
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Aluminum 96-98%
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Ammonium 85-90%
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Copper 96-98%
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Nickel 96-98%
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Zinc 96-98%
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Strontium 95-97%
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Cadmium 95-97%
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Silver 93-96%
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Mercury 94-97%
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Barium 94-96%
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Bacteria 99+%
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Chromium 94-96%
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Lead 95-98%
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Chloride 92-95%
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Bicarbonate 85-95%
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Nitrate 90-95%
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Fluoride 92-95%
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Silicate 95-95%
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Phosphate 95-98%
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Othophosphate 96-98%
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Chromate 85-95%
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Cyanide 85-95%
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Sulphite 94-96%
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Thiosulfate 96-98%
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Ferrocyanide 96-98%
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Bromide 85-90%
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Borate 30-50%
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Sulphate 96-98%
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Arsenic 90-95%
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Selenium 90-95%
STAGE 4 - 5 Micron Carbon Filter (Made in USA)
This granular activated carbon (GAC) filter also known as the carbon polishing post filter which is responsible for polishing up the water after the harsh filtration process through the membrane producing excellent tasting drinking water.

Maintenance And Replacement Cartridges
After 12 months, expect that the filters have accumulated enough sludge that results in a decline of their efficiency. We encourage you to replace your cartridges as outlined below.
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We recommend you renew & replace cartridge 1 annually
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Replace cartridge 2 with the existing cartridge 4 as it only polishes up the water so still in good conditionr
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Then renew & replace cartridge 4
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pH test the alkaline cartridge annually and only replace when the Alkalinity drops lower than what you require
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Only renew the RO Membrane every 4 - 6 years or in HARSH water areas replace when water quality drops or TDS increases
BEST PRICE GUARANTEE
We aim to provide you with the best price available in Australia! If for any reason you find a better genuine online price, let us know where and we will match it.
Just email: info@waterfilterforfridge.com.au (please allow for freight component)
IF YOU ARE NOT 100% SATISFIED WITH YOUR PURCHASE WE OFFER A FULL REFUND OR REPLACEMENT.
waterfilterforfridge.com.au
we are the cheapest fridge part dealer in Australia
More inquiry about this filters? Call us 1300 767 072 or Email us sales@waterfilterforfridge.com.au
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Compatible Models
Please refer to the product description above for compatible filter numbers, refrigerator models, and system model information.
If you cannot find your model number or are unsure whether this product is suitable for your system, please contact us before purchasing.
Contact Us for Compatibility SupportInstallation Guide
Please use the general guide below to help identify your filter type and follow the correct replacement process. Filter location and replacement steps may vary depending on your refrigerator or water filtration system model. Always refer to your appliance manual for the exact filter location and specific instructions.
Need Help Finding the Correct Filter?
Before ordering, compare your old filter, check the model number or filter code, and confirm the connector type. If you are unsure, please contact Water Filter Distributors for assistance.
Whole House System Installation Manual
For whole house filtration systems, please refer to the detailed installation manual below. Professional installation by a licensed plumber is recommended.
View Whole House Installation ManualTwin Cartridge Under Sink Installation Guide
For twin cartridge under sink systems, please refer to the installation guide below. This guide is suitable for systems supplied with a dedicated faucet, diverter valve, tubing and installation kit.
Important Notes
- Filter location and replacement steps may vary depending on your appliance or system model.
- Flush approximately 5–10 litres or 3–5 minutes of water after installation.
- Use with cold potable water only.
- Check for leaks after installation and reinstall if necessary.
- Always follow your appliance manufacturer's instructions.
Certification & Quality Assurance
Water Filter Distributors is operated by Mexi Trading Pty Ltd, an Australian owned and operated company. Our products are supplied with a strong focus on quality, safety and trusted filtration performance.
Important Certification Notice
- Certification details may vary depending on the specific product model.
- Please refer to the product description, packaging or official documentation for model-specific certification information.
- If you require confirmation for a specific product, please contact Water Filter Distributors before purchasing.






