⭐ Key Features

•HIGH-CAPACITY, SEMI-CONDUCTOR-GRADE RESIN CARTRIDGES are ideal for use in a variety of industrial settings, including pharmaceutical and medical laboratories, cosmetics, and circuit board printing applications

•FITS ALL 20" Big Blue Housing and can replace any 20" x 4.5" filter cartridge

•CONVENIENT AND COST-EFFECTIVE for applications where low levels of total organic carbon (TOC) and total dissolved solids (TDS) are required

•DESIGNED FOR DEIONIZING WATER up to 16 megohms

•CAPACITY OF 1,850 grains

🛠️ Specifications

• Brand : Pentek
• Size : 20" x 4.5"
• Style : Water Filter
• Material : Polypropylene (PP)
• Unit : 1 Count
• Color : White
• Number of items : 1
• Package quantity : 1
• Product benefit : Removes Odor
• Type : POTABLE_WATER_FILTER
• Item dimensions : H: 4.7 / L: 19.8 / W: 4.7 (Weight: 8.28)
• Package dimensions : H: 5.0 / L: 21.2 / W: 5.2 (Weight: 8.6)

📋 Product Description

The Pentair Pentek BBF1-20MB is a high-capacity Big Blue deionization cartridge engineered for facilities that demand ultra-pure water. Built with semiconductor-grade mixed bed DI resin, this 20" x 4.5" cartridge reduces dissolved ions to produce water up to 16 megohm resistivity, meeting the stringent purity requirements of pharmaceutical labs, medical facilities, cosmetics production, and electronics manufacturing. With a 1,850 grain capacity, the BBF1-20MB delivers significantly longer service life than standard 2.5" diameter DI cartridges, making it a cost-effective solution for high-demand environments. The low TOC resin minimizes organic contamination, while the polypropylene shell, endcaps, and integrated pre/post-filters provide durable, chemically compatible construction. Buna-N gaskets ensure a secure seal in any standard 20" Big Blue housing. Designed for a suggested flow rate of 1.25 gpm with a minimal 1.1 psi pressure drop, this cartridge maintains consistent output quality across operating temperatures of 40-100 degrees F (4.4-37.8 degrees C). Suitable for boiler makeup, cooling towers, humidification systems, laser equipment, and steam applications.