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Ultimate 10 in. Calcium Carbonate Alkaline Filter Kit with 1/4 in. Quick Connect

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  • Suitable for use with existing or new RO systems
  • Neutralizes acidic water by adding calcium carbonate
  • Friction-welded construction helps prevent leaks
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Product Details

About This Product

The PHPLUSKIT-14 cartridge is a super high capacity, naturally occurring ph increaser. It is for general drinking water ph increase purposes. It can also be used as a Reverse osmosis polisher if desired (installed at the last stage). since it is sacrificial, the calcite acid cartridge will add 2-5 ppm of hardness to the water. This is also an excellent way to reduce the corrosiveness low tds water. This filter is constructed totally from FDA grade materials and media. This calcite filter will deliver a neutral effluent form acidic feed as low as Ph5. Low ph's require slower flow rates. One of the advantages of calcite is its self-limiting property. When properly applied, it corrects ph only enough to reach a non-corrosive equilibrium. It does not overcorrect under normal conditions. Upon contact with calcite, acidic water slowly dissolve the calcium carbonate to raise the ph.


  • Increase ph level of the water by adding calcium carbonate mineral back into the water
  • Made of 100% high purity calcium carbonate to effectively neutralized acidity
  • Friction-welded construction with no glues or binder to provide reliable, no-leak seal
  • Quick connection fittings for easy leak free installation
  • A perfect add on filter to compliment any existing or new RO drinking water systems
  • Return Policy

Product Information

Internet # 300185279

Model # PHPLUSKIT-14


Dimensions: H 3 in, W 9 in, D 12 in


Product Depth (in.)

12 in

Product Height (in.)

3 in

Product Width (in.)

9 in


Brand/Model Compatibility




Color Family



No additional features

Filtration Method

Alkaline or Calcite

Number of filters included


Pack Size


Product Weight (lb.)

2 lb

Replacement Filter Type

Countertop Replacement Filters



Water Filtration System Type

Counter Top

Water Treatment Type

Counter Top Water Filter Replacements

Warranty / Certifications

Manufacturer Warranty

1 year

Questions & Answers

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Customer Reviews

4.7 out of 5

  • 4.7 out of 12 reviews
  • 100% recommend this product
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Showing 1-10 of 12 reviews
Not what I was hoping for
It does not make my water alkaline - still very acidic
Response from Customer ServiceDec 5, 2022
Dear customer, Thank you for taking the time to send us your review. Actual pH number is dependent on tap water pH, and water chemistry after this filter, along with pH testing tool accuracy. We truly apologize for your experience. To best assist and take care of the issue quickly, please contact us from M-F, 8:00am-5:00pm pacific time and we are always happy to help! Best regards, APEC Customer Support Team
  • Verified Purchase
  • Verified Purchase
Good quality replacement filters, though instructions for installation could be...
Good quality replacement filters, though instructions for installation could be more explicit
  • Verified Purchase
Another great product from APEC!
I wanted to make my water more PH neutral and this was a quick and easy addition to my APEC RO system. I really appreciate the quality of all the APEC products and am thankful to know my drinking water is safe to drink, plus it tastes fantastic!
  • Verified Purchase
  • Recommended
Mineral filter
I have had R.O. for years. I wanted to add minerals back into my water. Customer service made it easy to find proper components. Installation was simple
  • Verified Purchase
  • Recommended
Easy install / Great support
Asked customer support if increasing ph was possible on my existing ROES-50 system. They directed me to this. Easy to order and I still. And glad it was just add on to my existing system.
  • Verified Purchase
  • Recommended
  • Verified Purchase
Very easy to install
Water taste very good. The installation is very simple
  • Verified Purchase
  • Recommended
Alkaline water
Was searching for a good way to change the acidity of our drinking water. This was a safe and EASY add-on to our current system
  • Verified Purchase
  • Recommended
Easy to install
Fast delivery, excellent product.all what I need.thanks...
  • Verified Purchase
  • Recommended
Showing 1-10 of 12 reviews