Carbon Block and Sediment Water Filter Cartridge for Big Blue 20″x 4.5″, 1 Micron Filters


Carbon Block and Sediment Water Filter Cartridge for Big Blue 20″x 4.5″

  • For Big Blue 20″ x 4.5″ Housing Sumps
  • Suits 2 Stage Whole House Filtration Systems with 20 Inch Housings
Carbon Filter Specs Sheet

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Carbon Block and Sediment Water Filter Cartridge for Big Blue 20″x 4.5″

  • For Big Blue 20″x 4.5″ Housing Sumps (casing)
  • For two stage whole house filtration systems
  • 1st Stage: Sediment Filter Cartridge 
    • NSF Certified filter for removing particles down to 1 micron.
    • Reduces suspended particles
    • Three layers structure cartridge
    • High contaminant holding capacity
    • Average filter life 1 year (may be recuded)
  • 2nd Stage: Carbon Block Water Filter Cartridge
    • Highly effective at removing particles down to 1 micron
    • Reduce chemicals, sediments and heavy metals.
    • KX Technologies® and Filtrex Technologies®
    • High-performance carbon block filter.
    • Made from 100% coconut shell carbon (sustainable material).

Click here for more information about whole house water filters.

Visit WA Water Filters for replacement filters in Perth, WA.

Additional information

Flow Rate

50 LPM

Filter Media

Polypropylene and PAC (Powdered Activated Carbon)

Temperature Rating

40°F – 100°F (4.4°C – 37°C)

Micron Rating


Reduction Claim

Chlorine, Taste and Odours, Heavy Metals ( Mercury, Cadmium, Arsenic, Lead…), Parasites (Cryptosporidium, Giardia), Sediments (Dirt, Rust, Sand, Silt), Volatile Organic Compounds (Benzene, Ethylene, Formaldehyde…)

Sediment Filter Type

Poly Spun

Carbon Filter Type

Carbon Block


Life in Every Drop




Matrikx Pb1 - Carbon Block

Features & Benefits

  • 0.5 μm Nominal Filtration*
  • Rated Flow 0.75 GPM, 2,500 Gallons Life*
  • Lead Reduction Based on NSF/ANSI Standard 53*
  • Cyst Reduction Based on NSF/ANSI Standard 53*
  • Turbidity Reduction Based on NSF/ANSI Standard 53*
  • Outstanding Chlorine Taste and Odour Reduction*

Typical Usages

MATRIKX® Pb1® is a powerful, multifunctional filter cartridge for residential and commercial water treatment systems.

Technical Specifications

  • Part No: 06-425-200-20
  • O.D. x Length: 20″ x 4.5″
  • Chlorine Taste & Odour Reduction Capacity @ Flow*:
  • >42,000 gal. @ 5.00 GPM, >158,000 L @ 18.9 LPM
  • Nominal µm Rating: 0.5 µm
  • Lead Reduction:
  • 17,000 gal. @ 5.00 GPM
  • 64,300 L @ 18.9 LPM
  • Initial ∆P @ Flow:
  • 6.5 psid @ 5.0 GPM
  • 0.45 bar @ 18.9 LPM

MATRIKX® Pb1® extruded activated carbon filters reduce soluble lead using an ion-exchange filer medium with high
specificity for soluble lead. Particulate filtration is used to intercept insoluble lead-containing particles. Standard 2.50”
O.D. x 10” L filters will reduce lead, meeting the performance requirements of NSF/ANSI Standard 53 protocol for over 2,500 gallons when operating at a flow of 0.75 GPM.

Manufactured with KX®’s proprietary extrusion process, MATRIKX® Pb1® filters offer high levels of chemical reduction in potable drinking water, including chlorine taste and odour.

MATRIKX® Pb1® filters meet NSF/ANSI Standard 53, Turbidity and Cyst Reduction, including Cryptosporidium, Giardia, Entamoeba and Toxoplasma.

Filtration Media

MATRIKX® Pb1® filters consist of activated carbon particles fused into a uniform block with enhanced adsorptive capacity and effciency.
MATRIKX® Pb1® filters flow in a radial (outside-to-inside) direction, providing increased dirt-holding capacity and low pressure drop. Unlike granular activated carbon (GAC) filters, MATRIKX® Pb1® cartridges will not channel or bypass due to the extreme uniformity of their extruded activated carbon core. Service life of the MATRIKX®
Pb1® filter is greatly extended by a prefiltration medium.

  • No channeling
  • No fluidizing
  • No bypassing
  • Lowest extractables, pure materials of construction
  • Maximum service life and resistance to fouling
  • Graded density prefiltration design
  • Manufactured using FDA-compliant materials
  • Colour coded molded one-piece gasket and end cap

IMPORTANT NOTICE: Performance claims are based on a complete system, including a filter, housing, and connection to a pressurized water source. This filter must be placed in an appropriate system, and operated according to the system’s specifications in order to deliver the claimed performance. It is essential to follow operational, maintenance, and filter replacement requirements, as directed for each application, for this filter and system to perform correctly. Read the Manufacturer’s Performance Data Sheet accompanying the system and change the filter as suggested. The contaminants or other substances removed or reduced by this water filter are not necessarily in all users’ water.


  1. Projected chlorine taste and odour reduction capacity when tested in accordance with NSF/ANSI Standard 42 protocol.
  2. Nominal particulate rating (0.5 μm) is for >85% of a given size as determined from single-pass particle counting results.*
  3. Absolute particulate rating (1 μm) is for >99.9% of particles of a given size as determined from single-pass particle counting results.**
    * Nominal Filter Rating: Filter rating indicating the approximate size particle, the majority of which will not pass through the filter. It is generally interpreted as meaning that 85% of the particles of the size equal to the nominal micron rating will be retained by the filter. (WQA Glossary of Terms, Third Edition, 3-97).
    ** Absolute Filter Rating: Filter rating meaning that 99.9% (or essentially all) of the particles larger than a specific micron rating will be trapped on or within the filter. (WQA Glossary of Terms, Third Edition, 3-97)

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