iSpring FA15 10-inch Inline 3-Layer Alkaline Replacement Water Filter Cartridge
$33.99
About this item
- The RO membrane removes not only harmful pollutants but also minerals. As a result, a standard 5 stage RO system produces slightly acidic water with a pH of 7.0 or below. Alkaline filter produces pH8-9 alkaline water with restored minerals such as natural calcium and magnesium.
- The Alkaline filter can be added to any under-sink water filter or RO system.
- Raises pH level to 8-9
- Updated FA15 alkaline filters are built with a secure push-fit quick connection, which allows faster filter replacement. If you have trouble installing the filters, please refer to the user manual or contact us
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iSpring FA15 10-inch Inline 3-Layer Alkaline Replacement Water Filter Cartridge
$33.99
Product Description
Size:FA15 Alkaline FilterProduct Features
This Alkaline filter for Reverse Osmosis systems is an inline cartridge with mineral balls, calcite media, and corosex. The alkaline filter improves the pH value of the RO water which could be slightly acid after the reverse osmosis process. It also gives back healthy minerals such as ionized calcium and magnesium, which were taken away during the water filtering process.This filter is capable of increasing the pH value of the RO water by 0.5 to 0.8. The Alkaline filter replaces lost minerals from the RO process and restores these minerals back into the pure water. These minerals being restored will slightly increase the TDS value, normally between 10-20 ppm.
Product Highlights
Fits most water filtration systems including RO systems, including name brand models.
What is included:
1 piece of Alkaline Replacement Filter Cartridge
Specifications & Dimensions:
- Length: 9 3/4", O.D. = 2 7/8"
- 1/4" Fitting
- Weight: 1.5 LBS
- Service life: 6 months or 1500 gallons, whichever comes first
Why iSpring?
Located in Alpharetta, Georgia for over a decade, iSpring Water Systems LLC is a family owned company specializing in reverse osmosis water filtration systems. Our products include residential and commercial reverse osmosis (RO) systems, whole house water systems, ultrafiltration systems, shower, faucet, and counter top filters, filter cartridges and housings, RO coolers, and kitchen faucets and fittings. Our aim is to make drinking water accessible to all households. With affordable pricing, solid quality, prompt delivery, and customer service, we hope to assist in bringing you great water for years to come.
- Availability: In Stock
- Model: FA15
- Manufacturer: iSpring
Reviews with images

Write Review
Lucy Parr | 
2019-03-03
After shopping for a cartridge to add minerals back into my RO drinking water, I was glad to have stumbled across iSprings cartridge for a FAIR price compared to other brands. The description was upfront about what it put back into the water, also unlike a lot of other brands, including the one which came with my system. Brought my RO drinking water up to between 30-40 tds. I am more than satisfied.

2019-03-03
After shopping for a cartridge to add minerals back into my RO drinking water, I was glad to have stumbled across iSprings cartridge for a FAIR price compared to other brands. The description was upfront about what it put back into the water, also unlike a lot of other brands, including the one which came with my system. Brought my RO drinking water up to between 30-40 tds. I am more than satisfied.
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