PURETEC MAXIPLUS CARBON BLOCK CARTRIDGE
Puretec CB05MP2 5 Micron Carbon Block Cartridge
The Puretec CB05MP2 is a high-flow MaxiPlus carbon block replacement cartridge designed to significantly reduce chlorine, unwanted taste, odour and sediment in compatible water filtration systems.
The cartridge is manufactured from bonded activated carbon and uses Puretec's larger 4.5 inch × 20 inch MaxiPlus format, providing increased media volume for compatible whole-house and higher-flow filtration applications.
With a nominal 5 micron rating and a listed cartridge flow rate of up to 48 litres per minute, the CB05MP2 is designed to combine carbon treatment with particulate reduction while maintaining useful water flow.
Quick answer:
the Puretec CB05MP2 is a genuine 5 micron, 4.5" × 20" MaxiPlus carbon block cartridge. It uses bonded activated carbon to significantly reduce chlorine, unwanted taste, odour and sediment and has a listed flow rate of up to 48 L/min. Confirm that your existing system specifies the CB05MP2 or the same approved cartridge format before ordering.
PRODUCT AT A GLANCE
Puretec CB05MP2 Key Specifications
5 Micron
Nominal Rating
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4.5" × 20"
MaxiPlus Size
48 L/min
Listed Flow Rate
Carbon Block
Bonded Activated Carbon
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WHAT IT DOES
What Does the Puretec CB05MP2 Reduce?
The CB05MP2 combines carbon treatment with nominal 5 micron particulate filtration.
Chlorine
The activated carbon block is designed to significantly reduce chlorine from compatible water supplies.
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Taste & Odour
The carbon media reduces unwanted taste and odour that can affect drinking and cooking water.
Sediment
The nominal 5 micron carbon block also provides particulate reduction as water passes through the cartridge.
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Filtration performance depends on incoming water quality, flow, cartridge condition and the complete filtration system in which the cartridge is installed.
HOW IT WORKS
Bonded Activated Carbon Block Filtration
The CB05MP2 is manufactured from bonded activated carbon formed into a solid filtration block.
As water passes through the cartridge, the carbon media provides treatment for chlorine, unwanted taste and odour while the physical structure also provides sediment filtration.
The bonded construction is designed to prevent the release of loose carbon fines during normal filtration.
Activated Carbon Treatment
The carbon stage targets chlorine and substances associated with unwanted taste and odour.
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5 Micron Filtration
The carbon block also provides nominal particulate filtration down to 5 micron.
High Dirt-Holding Tolerance
The cartridge design allows particulate material to load through the carbon block while maintaining useful filtration capacity.
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HIGH-FLOW CARBON FILTRATION
Up to 48 Litres per Minute
The Puretec CB05MP2 has a listed cartridge flow rate of up to 48 L/min.
This makes it suited to compatible filtration systems where a larger 20-inch MaxiPlus carbon stage is required and higher water demand needs to be accommodated.
The actual flow through an installed system can still be lower because complete-system performance is affected by housings, other cartridges, pipework, incoming pressure, water quality and downstream restrictions.
CARTRIDGE FORMAT
4.5" × 20" MaxiPlus Cartridge Size
The CB05MP2 uses Puretec's larger 4.5 inch diameter × 20 inch long MaxiPlus cartridge format.
This is substantially larger than standard slimline 2.5-inch cartridges and is also longer than Puretec's 10-inch MaxiPlus range.
Check the physical cartridge format before ordering.
A cartridge being described as “20 inch” does not automatically make it compatible. Confirm that the existing housing is designed for a 4.5" × 20" MaxiPlus cartridge and that the filtration system specifies the CB05MP2 or a suitable approved equivalent.
SPECIFICATIONS
Puretec CB05MP2 Technical Specifications
| Specification |
Puretec CB05MP2 |
| Model |
CB05MP2 |
| Product Type |
Carbon block replacement cartridge |
| Cartridge Series |
Puretec CB Series |
| Format |
MaxiPlus 4.5" × 20" |
| Nominal Micron Rating |
5 micron |
| Media |
Bonded activated carbon block |
| Listed Flow Rate |
Up to 48 L/min |
| Primary Treatment |
Chlorine, unwanted taste, odour and sediment reduction |
IS IT RIGHT FOR MY SYSTEM?
Check Compatibility Before You Buy
A Good Choice When
Your existing filtration system specifies the Puretec CB05MP2 or a compatible 4.5" × 20" MaxiPlus 5 micron carbon block cartridge.
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Check First When
You know the cartridge is 20 inches long but are unsure whether the housing is a MaxiPlus 4.5-inch or slimline 2.5-inch format.
Consider Another Cartridge When
Your system requires a different micron rating, a different physical size or a specialised cartridge for other treatment requirements.
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CARBON VS SEDIMENT
Is the CB05MP2 a Sediment Filter or Carbon Filter?
The CB05MP2 is primarily a carbon block cartridge, but its solid 5 micron structure also provides sediment filtration.
This makes it different from a dedicated polyspun or pleated sediment cartridge, which is primarily designed for particulate loading rather than chlorine and taste-and-odour treatment.
| Feature |
CB05MP2 Carbon Block |
Dedicated Sediment Cartridge |
| Primary Role |
Carbon treatment plus particulate reduction |
Particulate filtration |
| Chlorine Reduction |
Yes |
Not normally |
| Taste & Odour Reduction |
Yes |
Not normally |
| Sediment Reduction |
Yes |
Yes |
| Media |
Bonded activated carbon |
Varies by cartridge |
MULTI-STAGE FILTRATION
Using the CB05MP2 as Part of a Multi-Stage System
In larger filtration systems, the CB05MP2 may form one stage within a broader treatment sequence rather than operating as the only cartridge.
A dedicated sediment cartridge can be installed before the carbon stage to capture larger particulate material, while a finer downstream stage may provide additional particulate treatment after the carbon cartridge.
The exact cartridge order must follow the requirements of the filtration system being serviced.
FLOW RATE
Why the Complete System May Flow Below 48 L/min
The 48 L/min figure is the listed flow rating for the CB05MP2 cartridge itself.
If the cartridge is installed in a multi-stage system, another cartridge may have a lower flow rating. Pipe size, filter housings, valves, incoming pressure and water conditions can also affect real-world performance.
For that reason, use the maximum flow specification of the complete filtration system when sizing an installation rather than relying on the cartridge flow figure alone.
WHEN TO REPLACE
When Should the CB05MP2 Be Replaced?
Replacement timing should follow the maintenance requirements of the filtration system in which the cartridge is installed.
Carbon cartridge life varies with water consumption, incoming chlorine levels, sediment loading and general water quality.
- Manufacturer service interval has been reached
- Specified cartridge capacity has been reached
- Chlorine taste or odour begins to return
- Water flow has noticeably reduced
- Cartridge has experienced high sediment loading
- Previous cartridge replacement date is unknown
Do not rely on a universal replacement interval where the complete filtration system specifies a different servicing schedule.
WHY SERVICE LIFE VARIES
What Affects Carbon Cartridge Life?
Water Consumption
Higher water use passes a greater total volume through the activated carbon and can use available treatment capacity sooner.
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Chlorine Loading
The concentration of chlorine in the incoming supply affects the amount of carbon treatment required over the cartridge's life.
Sediment Loading
Higher particulate loading can increase pressure drop through the carbon block and affect practical cartridge life.
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CARTRIDGE REPLACEMENT
What Is Involved in Replacing a CB05MP2?
The CB05MP2 is a conventional cartridge installed inside a compatible filter housing. It is not a quick-twist sealed cartridge.
The exact servicing procedure should follow the instructions for the filtration system or housing being maintained.
- Turn off the incoming water supply
- Release pressure from the filtration system
- Open the correct MaxiPlus filter housing
- Remove the used CB05MP2 cartridge
- Clean the filter bowl as required
- Inspect the housing O-ring and sealing surfaces
- Install the replacement CB05MP2 correctly
- Reassemble the housing
- Restore water pressure gradually
- Check the housing and connections for leaks
- Flush the replacement carbon cartridge as required before normal use
HOUSING MAINTENANCE
Check the O-Ring Whenever the Housing Is Opened
A cartridge change is also an opportunity to check the condition of the filter housing and its sealing components.
The housing O-ring should be clean, correctly seated and free from obvious damage before the filter bowl is reinstalled.
If a housing, O-ring, isolation valve or fitting is damaged, that component may need separate replacement rather than simply installing a new carbon cartridge.
DIY OR PROFESSIONAL SERVICE
Can the CB05MP2 Be Replaced Yourself?
Cartridge replacement may be completed by the owner where the filtration system is designed for user servicing and the incoming water can be safely isolated and depressurised.
Large 20-inch MaxiPlus housings can contain a significant amount of water and require adequate access to safely remove the filter bowl and cartridge.
Professional servicing is appropriate where access or condition is uncertain.
If the housing is difficult to isolate, difficult to open, leaking or has damaged seals or plumbing components, professional cartridge replacement may be more appropriate.
PROFESSIONAL REPLACEMENT
Professional CB05MP2 Cartridge Replacement
Professional cartridge replacement may be available in eligible Installed Today service areas.
A cartridge service can include removal of the existing cartridge, cleaning of the accessible filter housing, checking accessible seals, fitting the replacement CB05MP2 and checking the filtration system for leaks and normal flow after repressurisation.
Replacement housings, valves, additional cartridges, pipework repairs or other components are separate where required.
COMMON QUESTIONS
Questions About the Puretec CB05MP2
What Is the Puretec CB05MP2?
It is a Puretec MaxiPlus bonded activated carbon block replacement cartridge with a nominal 5 micron rating.
What Size Is the CB05MP2?
The cartridge uses the larger 4.5 inch × 20 inch MaxiPlus format.
What Is Its Micron Rating?
The CB05MP2 has a nominal filtration rating of 5 micron.
What Does It Reduce?
The cartridge is designed to significantly reduce chlorine, unwanted taste, odour and sediment.
What Is the Listed Flow Rate?
The CB05MP2 has a listed cartridge flow rate of up to 48 litres per minute.
Is It Made From Activated Carbon?
Yes. The cartridge is constructed from bonded activated carbon.
Does It Release Carbon Fines?
The bonded carbon block construction is designed to avoid the release of carbon fines during normal use.
Will It Fit Every 20-Inch Housing?
No. It uses the larger 4.5-inch diameter MaxiPlus format and should not be assumed to fit slimline 2.5-inch housings.
Is It a Quick-Twist Cartridge?
No. The CB05MP2 is a conventional replacement cartridge installed inside a compatible filter housing.
Can It Be Used in Multi-Stage Filtration?
Yes, where the filtration system specifies the CB05MP2 as one of its treatment stages.
Can Reduced Flow Mean the Cartridge Needs Attention?
Potentially. Sediment loading can increase pressure drop through the carbon block, although other filtration or plumbing restrictions can cause similar symptoms.
Can a Return of Chlorine Taste or Odour Indicate Replacement Is Due?
Yes. A change in the water characteristics targeted by the carbon stage can be a reason to check whether the cartridge has reached its service interval or treatment capacity.
How Often Should It Be Replaced?
Follow the maintenance schedule for the filtration system in which the CB05MP2 is installed. Actual service life varies with water quality, water consumption, chlorine loading and sediment levels.
Can I Replace the Cartridge Myself?
Potentially, if the filtration system is designed for owner servicing and you can safely isolate, depressurise, open and correctly reseal the filter housing.
Can Installed Today Replace the CB05MP2?
Professional cartridge replacement may be available in eligible service areas where the filtration system is accessible and in serviceable condition.
WHY INSTALLED TODAY
Order Your Puretec CB05MP2 Your Way
Supply Only
Order the Puretec CB05MP2 where you have already confirmed it is the correct replacement cartridge for your filtration system.
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Correct Cartridge Specification
The CB05MP2 combines the 5 micron rating, 4.5" × 20" MaxiPlus format and high-flow carbon block construction required by compatible applications.
Professional Service Option
Professional cartridge replacement may be available in eligible service areas if you prefer the housing serviced and the accessible filtration system checked at the same time.
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FINAL CHECK
Is the Puretec CB05MP2 the Right Cartridge for Your System?
The Puretec CB05MP2 is a genuine 5 micron bonded activated carbon block cartridge designed to significantly reduce chlorine, unwanted taste, odour and sediment in compatible water filtration systems.
It uses the larger 4.5" × 20" MaxiPlus format and has a listed flow rate of up to 48 L/min, making it suitable for compatible high-flow filtration arrangements that specify this cartridge.
Before ordering, confirm that your existing filtration system requires the CB05MP2. Follow the servicing requirements of the complete filtration system, inspect the housing and seal during cartridge replacement and check for leaks after the new cartridge has been installed.
