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Big Blue Water Filter Standard Size 4.5" x 20". Each filter is filled with Granular Activated Coconut Shell Carbon and 2 lbs of both KDF 85 and 55.
Perfect and Effective at Iron, Hydrogen sulfide, Sulfur, Rotten Egg Smell Reduction in water
KDF 55: Reduces chlorine taste and odor, water-soluble heavy metals, scale, and algae, and inhibits bacterial growth in drinking water
Filters fit into Standard 4.5" x 20" Big Blue Whole House Canisters.
Save with this Refillable Big Blue Filter!

KDF 85 Medium Removes or reduces iron and hydrogen sulfide from municipal or other water supplies. Also controls scale, bacteria and algae.

iron / hydrogen sulfide reduction filter contains a combination of KDF85 media and coconut shell activated carbon. The KDF85 effectively reduces dissolved iron and hydrogen sulfide odor over a wider pH range than possible with standard oxidation filters such as manganese greensand, thereby protecting your plumbing system including toilets, bath tubs and showers, and appliances such as clothes washers and dishwashers, from unsightly staining and odor. The activated carbon removes organic contaminants to substantially improving water clarity, taste, and odor. It does NOT add any harmful chemicals to the water, making it completely safe for drinking water applications.

BIG BLUE 4.5 X 20" KDF85/KDF55/GAC WATER FILTER CARTRIDGE
2 LBS KDF55
2 LBS KDF85
BALANCE GAC CARBON COCONUT SHELL.
KDF55:
KDF 55 Designed specifically for removing or reducing chlorine and water-soluble heavy metals. It controls scale, bacteria and algae, even in hot water. The process medium recently received NSF International Certification and is certified by NSF to NSF/ANSI Standard 42. This medium is also in compliance with California Health and Safety Code Section 166875 (or commonly know as AB1953) and Vermont Act 193
KDF 85 Medium Removes or reduces iron and hydrogen sulfide from municipal or other water supplies. Also controls scale, bacteria and algae.
iron / hydrogen sulfide reduction filter contains a combination of KDF85 media and coconut shell activated carbon. The KDF85 effectively reduces dissolved iron and hydrogen sulfide odor over a wider pH range than possible with standard oxidation filters such as manganese greensand, thereby protecting your plumbing system including toilets, bath tubs and showers, and appliances such as clothes washers and dishwashers, from unsightly staining and odor. The activated carbon removes organic contaminants to substantially improving water clarity, taste, and odor. It does NOT add any harmful chemicals to the water, making it completely safe for drinking water applications.

The life of the filter cartridge depends on the contamination level (iron and hydrogen sulfide levels) and amount of water consumed on a daily basis. The expected filter life for a typical residential application is about 20,000 gallons (75,500 L). For best results and longest filter-life, a sediment pre-filter is recommended.

What types of contaminants are you dealing with?

Problem	Likely Cause
rusty red or brown staining of fixtures or laundry and/or your water has a metallic taste	excess iron
black staining of fixtures or laundry	excess manganese
rotten egg smell from water	Hydrogen sulfide (H2S)

How it Works: KDF85 media acts as a catalyst to change soluble iron (ferrous) cations into insoluble ferric hydroxide which becomes trapped in the filter. The hydrogen sulfide is converted into an insoluble sulfide precipitate which is then similarly trapped and filtered. Ferric iron is removed by mechnical filtration.

Specifications & Operating Conditions:
Housing Material	Polypropylene
Maximum Recommended Flow Rate	4 Gallons Per Minute (11 LPM)
Recommended Operating Temp. Range:	40-100°F (4.4 to 37°C)
Maximum Recommended Pressure	90 PSI (6.2 bar)
Required pH level:	6.5 to 8.5
Recommended Dissolved Oxygen :	Iron level in ppm x 0.6
Maximum Recommended Iron Level:	3 ppm (mg/l)