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Puretec CB951
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PURETEC CARBON BLOCK CARTRIDGE

Puretec CB951 0.5 Micron Carbon Block Cartridge

The Puretec CB951 is a genuine 10-inch carbon block replacement cartridge designed to significantly reduce chlorine, unwanted taste, odour, sediment and filterable cysts in compatible water filtration systems.

Manufactured from bonded activated carbon, the CB951 combines fine nominal filtration with carbon treatment in a compact 2.5" × 10" cartridge.

Puretec lists the CB951 with a nominal 0.5 micron rating, a flow rate of up to 15 litres per minute and 99.9% Cryptosporidium cyst reduction under the applicable cartridge performance conditions.

Quick answer: the Puretec CB951 is a 0.5 micron bonded carbon block cartridge, not a 1 micron filter. It measures 2.5" × 10", has a listed flow rate of 15 L/min and is designed to reduce chlorine, unwanted taste, odour, sediment and specified cysts. Puretec currently uses the CB951 as stage two in systems including the RO270, PRO270 and TS200.
PRODUCT AT A GLANCE

Puretec CB951 Key Specifications

0.5 Micron Nominal Rating
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2.5" × 10" Standard Size
15 L/min Listed Flow Rate
75,708 L Listed Capacity
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WHAT IT DOES

What Does the Puretec CB951 Reduce?

Chlorine

The bonded activated carbon is designed to significantly reduce chlorine from compatible water supplies.

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Taste & Odour

The carbon media targets unwanted tastes and odours as water passes through the cartridge.

Sediment

The solid carbon block also provides nominal 0.5 micron particulate filtration.

Filterable Cysts

Puretec specifies the CB951 for 99.9% Cryptosporidium cyst reduction under applicable performance conditions.

Carbon Treatment

Bonded activated carbon provides adsorption treatment while also acting as a fine filtration medium.

SilverPlus Technology

Puretec lists SilverPlus antibacterial technology as part of the CB951 cartridge design.

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FINE CARBON FILTRATION

0.5 Micron Carbon Block Construction

The CB951 uses a bonded activated carbon block rather than loose granular carbon.

This construction gives the cartridge a nominal filtration rating of 0.5 micron while also providing chlorine, taste and odour treatment.

Puretec describes the cartridge as having high dirt-holding tolerance and enhanced dirt-holding capacity to help utilise the carbon block throughout its service life.

CYST REDUCTION

99.9% Cryptosporidium Cyst Reduction

Puretec specifically lists the CB951 for 99.9% Cryptosporidium cyst reduction.

This claim applies to the manufacturer-specified cartridge performance and should not be interpreted as general water sterilisation or as a guarantee that the cartridge makes microbiologically unsafe water suitable for drinking.

Fine filtration is not a substitute for required disinfection. Where microbiological safety is uncertain, follow the requirements of the complete filtration system and use appropriate disinfection before or after filtration where required.
CARBON FINES

Bonded Carbon Without Loose Carbon Fines

Puretec states that the CB951's bonded activated-carbon construction provides water treatment without releasing loose carbon fines during normal operation.

This differs from loose granular carbon arrangements and gives the CB951 a solid filtration structure throughout the cartridge.

SPECIFICATIONS

Puretec CB951 Technical Specifications

Specification Puretec CB951
Model CB951
Product Type Bonded activated carbon block cartridge
Series Puretec CB Series
Nominal Micron Rating 0.5 micron
Cartridge Size Standard 2.5" × 10"
Listed Flow Rate 15 L/min
Listed Capacity 75,708 litres
Filter Media Bonded activated carbon
Primary Treatment Chlorine, unwanted taste, odour, sediment and filterable cyst reduction
Cyst Performance 99.9% Cryptosporidium cyst reduction
Additional Technology SilverPlus antibacterial technology

The micron rating is nominal. Practical service life and capacity depend on the complete system, water quality, usage and operating conditions.

RO270 COMPATIBILITY

CB951 in the Puretec RO270

Puretec currently specifies the CB951 as stage two in the RO270 reverse osmosis drinking-water system.

Stage 1 – MC051

5 micron moulded-carbon cartridge providing sediment and chlorine pretreatment.

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Stage 2 – CB951

0.5 micron carbon block cartridge providing finer filtration and carbon treatment.

Stage 3 – RET1812-75

The reverse osmosis membrane provides the ultra-fine membrane-filtration stage after the CB951.

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RO270 SERVICE INTERVAL

How Often Is CB951 Replaced in an RO270?

Puretec's current RO270 maintenance guide specifies replacement of the sediment and chemical-removal cartridges every 6 months, depending on incoming water quality and usage.

For the RO270, this means the MC051 and CB951 form the regular six-month cartridge service pair.

The RET1812-75 reverse osmosis membrane follows a different replacement schedule and should not automatically be replaced every time the CB951 is changed.

OTHER PURETEC APPLICATIONS

Other Systems That Use the CB951

Puretec also lists the CB951 as a replacement component in other current filtration systems.

Puretec PRO270

The portable PRO270 reverse osmosis system uses CB951 as its second filtration stage.

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Puretec TS200

The TS200 dual under-sink system lists CB951 as one of its genuine replacement cartridges.

Other Compatible Systems

Use the CB951 where the applicable Puretec system or housing specification specifically calls for this cartridge model.

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CB951 VS CB951-H

Standard Cyst Reduction vs Heavy-Metal Cartridge

The CB951 and CB951-H share the same physical 2.5" × 10" format, 0.5 micron rating and 15 L/min listed flow rate, but they are not the same treatment cartridge.

Feature CB951 CB951-H
Size 2.5" × 10" 2.5" × 10"
Nominal Rating 0.5 micron 0.5 micron
Flow Rate 15 L/min 15 L/min
Cyst Reduction Yes Yes
Heavy-Metal Reduction Not the standard CB951 treatment claim Specified by Puretec
Do not apply CB951-H treatment claims to the standard CB951. If heavy-metal reduction is required, check the exact cartridge and complete filtration system specified for that application.
CB SERIES COMPARISON

How Does the CB951 Compare With Other 10-Inch CB Cartridges?

Model Nominal Rating Size Listed Flow Primary Difference
CB951 0.5 micron 2.5" × 10" 15 L/min Cyst-reduction carbon block
CB051 5 micron 2.5" × 10" 16 L/min Standard carbon block
CB101 10 micron 2.5" × 10" 18 L/min Coarser carbon block filtration
WHEN TO REPLACE

When Is the CB951 Due for Replacement?

The correct replacement interval depends on the filtration system in which the CB951 is installed.

In the current Puretec RO270, Puretec specifies replacement of the MC051 and CB951 every 6 months, dependent on water quality and usage.

  • Manufacturer service interval has been reached
  • Chlorine taste or unwanted odour begins to return
  • Water flow has noticeably reduced
  • Cartridge has experienced increased sediment loading
  • System maintenance schedule calls for replacement
  • Previous cartridge replacement date is unknown
CAPACITY

What Does the 75,708 Litre Rating Mean?

Puretec's CB Series specifications list the CB951 with a capacity of 75,708 litres.

This manufacturer-listed figure should not be treated as a guarantee that every installation will reach that volume before replacement is required.

Incoming chlorine concentration, sediment loading, total consumption, system configuration and the applicable maintenance schedule can all influence practical cartridge life.

CARTRIDGE REPLACEMENT

What Is Involved in Replacing a CB951?

The CB951 is a conventional replacement cartridge installed inside a reusable compatible filter housing. It is not a sealed quick-twist cartridge.

  • Confirm the filtration system specifies CB951
  • Isolate the incoming water supply
  • Relieve system pressure as required
  • Open the appropriate filter housing
  • Remove the used CB951 cartridge
  • Clean the accessible housing as required
  • Inspect the O-ring and sealing surfaces
  • Install the replacement CB951 correctly
  • Reassemble the housing
  • Restore water pressure gradually
  • Check the housing and fittings for leaks
  • Flush or recommission the complete system according to its instructions
BEFORE ORDERING

Check These Details First

  • Existing cartridge code is CB951
  • System specifies a 0.5 micron carbon block cartridge
  • Housing accepts the 2.5" × 10" cartridge format
  • You do not require the CB951-H heavy-metal model
  • Existing filter housing is serviceable
  • Water can be isolated for cartridge replacement
  • System-specific replacement interval has been checked
  • Other service components have been identified where required
DIY OR PROFESSIONAL SERVICE

Can the CB951 Be Replaced Yourself?

Cartridge replacement may be practical where the complete filtration system is designed for routine owner maintenance and can be safely isolated, depressurised, opened and resealed.

If the CB951 is installed in an RO270, follow the RO270 cartridge-change procedure and keep the MC051 and CB951 in their correct stage positions.

Use professional servicing where the system condition is uncertain. Leaking housings, damaged seals, valves, tubing, pressure-control components or other system faults may require additional work beyond a standard cartridge replacement.
ORDERING OPTIONS

Choose How You Want to Order

Supply Only

Order the genuine Puretec CB951 for delivery to supported Australian locations where you have already confirmed the correct cartridge model.

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RO270 Replacement

Order individually or as part of the applicable MC051 and CB951 service combination for your RO270.

Professional Service Option

Professional cartridge replacement may be available in selected Installed Today Brisbane and Gold Coast service areas.

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COMMON QUESTIONS

Questions About the Puretec CB951

What Is the Puretec CB951?

It is a genuine Puretec bonded activated-carbon block cartridge designed for fine filtration, chlorine reduction and cyst reduction.

What Is the CB951 Micron Rating?

The correct nominal rating is 0.5 micron, not 1 micron.

What Size Is the CB951?

It uses the standard 2.5" × 10" cartridge format.

What Is the Flow Rate?

Puretec lists the CB951 at up to 15 litres per minute.

What Is the Listed Capacity?

Puretec's CB Series specification lists a capacity of 75,708 litres.

Does the CB951 Reduce Chlorine?

Yes. Chlorine reduction is one of the primary treatment functions specified by Puretec.

Does It Reduce Taste & Odour?

Yes. The activated-carbon block is designed to reduce unwanted taste and odour.

Does It Reduce Sediment?

Yes. Its bonded carbon structure also provides nominal 0.5 micron particulate filtration.

Does the CB951 Reduce Cryptosporidium?

Puretec specifies the cartridge for 99.9% Cryptosporidium cyst reduction under the applicable performance conditions.

Does the Standard CB951 Reduce Heavy Metals?

Do not apply the CB951-H heavy-metal claim to the standard CB951. Puretec offers CB951-H as a separate cartridge for applications requiring that treatment specification.

Does the CB951 Suit the RO270?

Yes. Puretec currently specifies it as stage two in the RO270 reverse osmosis system.

How Often Is It Replaced in the RO270?

Puretec specifies replacement of the MC051 and CB951 every 6 months, depending on water quality and usage.

Does It Suit the PRO270?

Yes. Puretec also specifies CB951 as stage two in the PRO270 portable reverse osmosis system.

Does It Suit the TS200?

Yes. Puretec lists the CB951 as a genuine replacement cartridge for the TS200 dual under-sink filtration system.

Can Installed Today Replace the CB951?

Professional cartridge replacement may be available in eligible Brisbane and Gold Coast service areas where the filtration system is accessible and in serviceable condition.

WHY INSTALLED TODAY

Order the Correct Puretec CB951 Replacement Cartridge

Supply First

Purchase the genuine Puretec cartridge without adding installation where you already have your own servicing arrangement.

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Correct Technical Details

The correct 0.5 micron rating, 15 L/min flow and model-specific compatibility help avoid ordering the wrong carbon cartridge.

Installation Capability

If you prefer professional servicing, Installed Today may also be able to replace the cartridge in selected local service areas.

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FINAL CHECK

Is the Puretec CB951 the Right Cartridge for Your System?

The Puretec CB951 is a genuine 0.5 micron bonded activated carbon block cartridge designed to significantly reduce chlorine, unwanted taste, odour, sediment and specified filterable cysts.

It measures 2.5" × 10", has a listed flow rate of 15 L/min and a listed capacity of 75,708 litres. Puretec also specifies 99.9% Cryptosporidium cyst reduction under the applicable cartridge performance conditions.

Before ordering, confirm that your filtration system specifically requires the CB951. If it is installed in a Puretec RO270, it is the stage-two cartridge and Puretec specifies replacement approximately every 6 months alongside the MC051, depending on water quality and usage.

Buying a new hot water system, water filter, pump or plumbing product should be simple. Installed Today helps you compare the product, the supply-only price and the available installation options in one place, so you can choose what suits your home, budget and timing without the back and forth.

Whether you already know exactly what you need or you are still comparing options, we make it easier to order with confidence.

Why Customers Choose Installed Today

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Installation Add-Ons Available

Where relevant, you can add common installation extras such as valve kits, bases, electrical options, removal, access-related items or other site-specific upgrades before checkout.

Built Around Brisbane and Gold Coast Homes

Our product and installation options are selected with common local homes, water quality, plumbing layouts, access issues and replacement requirements in mind.

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Important Note

Installation availability, inclusions and add-ons vary by product type, site access, existing services, selected options and your property requirements. Some installations may require additional work, upgrades or checks before the job can proceed.

Fast & Reliable Delivery – What to Expect

Same Day Delivery: Available in Brisbane and Gold Coast on select units ordered before 8:00am
Express Delivery: 1–4 business days
Standard Delivery: 2–8 business days

Same Day Delivery

Same day delivery is available for selected hot water systems in Brisbane and Gold Coast metro areas when ordered before 8:00am, subject to stock availability, delivery capacity and suitable transport conditions.

Fast Metro Delivery

Most hot water orders in metro areas are delivered quickly, with around 90% arriving within 1 business day.

Weather Delays

Hot water systems cannot always be transported safely by courier during rain. Delivery timeframes may be affected when wet weather impacts safe handling, loading, unloading or transport conditions.

Express Delivery Guarantee

If your express delivery order takes longer than 1–4 business days, we will adjust the delivery timeframe to our standard 2–8 business days and refund your express shipping charge automatically.

Order Tracking

We will send your delivery details as soon as your order has been dispatched.

Need help with your delivery? Contact our team and we’ll be happy to assist.

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