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Pentek - BBF1-20MB - 20" x 4.5" Mixed Bed DI Resin Filter

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Pentek - BBF1-20MB - 20" x 4.5" Mixed Bed DI Resin Filter

The Pentek BBF1-20MB is a 20" x 4.5" mixed bed deionization resin cartridge engineered to remove dissolved solids and reduce total organic carbon (TOC) for high-purity water applications. With a 1,850 grain capacity and semiconductor-grade, FDA-compliant resin, this filter delivers low TDS and TOC output at 1.25 GPM for pharmaceutical, laboratory, and industrial use.
SPECIFICATIONS

Performance & Capacity

Grain Capacity
1,850 grains
120,000 total TDS removal
Flow Rate
1.25 GPM
Maximum rated flow
Dimensions
20" x 4.5"
Fits Big Blue housings
Pressure Drop
1.1 psi
At 1.25 GPM flow
Temperature
40°F – 100°F
Operating range
Resin Grade
Semiconductor
FDA-compliant
TECHNICAL DETAILS

Construction & Materials

Filter Media Mixed bed deionization resin (cation + anion)
Shell Material Polypropylene
End Caps Polypropylene
Pre/Post Filters Polypropylene mesh layers
Gaskets Buna-N (nitrile)
Model Number BBF1-20MB (Pentek 155281-43)
Housing Compatibility 20" Big Blue filter housings (4.5" diameter)
COMPATIBILITY & APPLICATIONS

Where This Filter Works Best

The Pentek BBF1-20MB is designed for whole-house, commercial, and industrial deionization applications where high-purity water is required. Common installations include pharmaceutical and medical laboratories, cosmetics manufacturing, circuit board printing, steam processors, humidification systems, recirculating and cooling towers, power generation equipment, lasers, jet water sprayers, and boiler make-up water systems. This filter should be installed in a dedicated 20" x 4.5" Big Blue housing and is typically used after carbon and sediment pre-filtration to protect the resin bed. The mixed bed resin combines cation and anion exchange for comprehensive ion removal and low conductivity output.

💧 Pro Tip: Always pre-filter your feed water with sediment and carbon stages before DI resin cartridges. This extends resin life dramatically by removing particulates and chlorine that would otherwise exhaust the bed prematurely. Monitor TDS with a meter and replace the cartridge when conductivity rises above your target threshold.
The Pentek BBF1-20MB is a 20" x 4.5" mixed bed deionization resin cartridge engineered to remove dissolved solids and reduce total organic carbon (TOC) for high-purity water applications. With a 1,850 grain capacity and semiconductor-grade, FDA-compliant resin, this filter delivers low TDS and TOC output at 1.25 GPM for pharmaceutical, laboratory, and industrial use.
SPECIFICATIONS

Performance & Capacity

Grain Capacity
1,850 grains
120,000 total TDS removal
Flow Rate
1.25 GPM
Maximum rated flow
Dimensions
20" x 4.5"
Fits Big Blue housings
Pressure Drop
1.1 psi
At 1.25 GPM flow
Temperature
40°F – 100°F
Operating range
Resin Grade
Semiconductor
FDA-compliant
TECHNICAL DETAILS

Construction & Materials

Filter Media Mixed bed deionization resin (cation + anion)
Shell Material Polypropylene
End Caps Polypropylene
Pre/Post Filters Polypropylene mesh layers
Gaskets Buna-N (nitrile)
Model Number BBF1-20MB (Pentek 155281-43)
Housing Compatibility 20" Big Blue filter housings (4.5" diameter)
COMPATIBILITY & APPLICATIONS

Where This Filter Works Best

The Pentek BBF1-20MB is designed for whole-house, commercial, and industrial deionization applications where high-purity water is required. Common installations include pharmaceutical and medical laboratories, cosmetics manufacturing, circuit board printing, steam processors, humidification systems, recirculating and cooling towers, power generation equipment, lasers, jet water sprayers, and boiler make-up water systems. This filter should be installed in a dedicated 20" x 4.5" Big Blue housing and is typically used after carbon and sediment pre-filtration to protect the resin bed. The mixed bed resin combines cation and anion exchange for comprehensive ion removal and low conductivity output.

💧 Pro Tip: Always pre-filter your feed water with sediment and carbon stages before DI resin cartridges. This extends resin life dramatically by removing particulates and chlorine that would otherwise exhaust the bed prematurely. Monitor TDS with a meter and replace the cartridge when conductivity rises above your target threshold.
$81.90

Original: $234.00

-65%
Pentek - BBF1-20MB - 20" x 4.5" Mixed Bed DI Resin Filter—

$234.00

$81.90

Description

The Pentek BBF1-20MB is a 20" x 4.5" mixed bed deionization resin cartridge engineered to remove dissolved solids and reduce total organic carbon (TOC) for high-purity water applications. With a 1,850 grain capacity and semiconductor-grade, FDA-compliant resin, this filter delivers low TDS and TOC output at 1.25 GPM for pharmaceutical, laboratory, and industrial use.
SPECIFICATIONS

Performance & Capacity

Grain Capacity
1,850 grains
120,000 total TDS removal
Flow Rate
1.25 GPM
Maximum rated flow
Dimensions
20" x 4.5"
Fits Big Blue housings
Pressure Drop
1.1 psi
At 1.25 GPM flow
Temperature
40°F – 100°F
Operating range
Resin Grade
Semiconductor
FDA-compliant
TECHNICAL DETAILS

Construction & Materials

Filter Media Mixed bed deionization resin (cation + anion)
Shell Material Polypropylene
End Caps Polypropylene
Pre/Post Filters Polypropylene mesh layers
Gaskets Buna-N (nitrile)
Model Number BBF1-20MB (Pentek 155281-43)
Housing Compatibility 20" Big Blue filter housings (4.5" diameter)
COMPATIBILITY & APPLICATIONS

Where This Filter Works Best

The Pentek BBF1-20MB is designed for whole-house, commercial, and industrial deionization applications where high-purity water is required. Common installations include pharmaceutical and medical laboratories, cosmetics manufacturing, circuit board printing, steam processors, humidification systems, recirculating and cooling towers, power generation equipment, lasers, jet water sprayers, and boiler make-up water systems. This filter should be installed in a dedicated 20" x 4.5" Big Blue housing and is typically used after carbon and sediment pre-filtration to protect the resin bed. The mixed bed resin combines cation and anion exchange for comprehensive ion removal and low conductivity output.

💧 Pro Tip: Always pre-filter your feed water with sediment and carbon stages before DI resin cartridges. This extends resin life dramatically by removing particulates and chlorine that would otherwise exhaust the bed prematurely. Monitor TDS with a meter and replace the cartridge when conductivity rises above your target threshold.
Pentek - BBF1-20MB - 20" x 4.5" Mixed Bed DI Resin Filter | Isopure Water