Description

Omnipure K2548-BB Calcite Acid Neutralizer Inline Filter (Made in USA)

The Omnipure K2548-BB is an inline calcite (white marble) acid neutralizer filter designed to
raise low-pH (acidic) water and help deliver a more balanced, less corrosive, better-tasting finish.
Commonly installed as a final stage on reverse osmosis (RO) and drinking water systems.

Key Benefits

• Neutralizes acidic water by gently increasing pH
• Helps reduce the “flat/acidic” taste often associated with low-pH water
• May help reduce corrosiveness associated with acidic water (helps protect downstream plumbing)
• Made in the USA (Omnipure)

What’s Inside

• Media: All-calcite (crushed, screened white marble)
• Function: pH neutralization / remineralization-style polishing

Specifications

Applications

• Final polishing stage for reverse osmosis (RO) systems
• Drinking water systems where water is acidic / low pH
• Situations where pH balancing is desired for taste and corrosion reduction

Replacement Guidance

• Replace on a regular schedule based on water conditions and usage (commonly 6–12 months).
• If pH improvement decreases over time, it may be time to replace the filter.

🔧 Installation Tips

Tubing Size

• Most RO systems use 1/4″ OD tubing (standard RO size).
• Some countertop RO systems and specialty setups use 3/8″ OD tubing.
• Tubing size refers to the outside diameter (OD) of the tube.

Elbow Adapters (Threaded Port)

• This inline filter features 1/4″ threaded ports.
• We ship it standard with 1/4″ thread × 1/4″ OD elbow adapters for typical RO installations.
• If your system uses 3/8″ OD tubing, select the 3/8″ adapter option to receive the correct elbow fittings.

✔ No tools required
✔ Remove the end cap and screw the elbow adapters onto the openings
✔ Push-to-connect installation for tubing

When Do You Need a T-Fitting?

A T-fitting (1/4″ stem × 1/4″ OD tube × 1/4″ OD tube) can be helpful if you are:

• Adding the inline filter to an existing 1/4″ RO line
• Looking for a cleaner branch connection
• Installing the filter without reworking your tubing layout

✔ Optional accessory
✔ Makes installation easier for some setups

Not Sure Which Option to Choose?

• If unsure, select Universal Fit option (Included 4 elbow adapters for 1/4″ & 3/8″ OD Tubing Connection)

▶️ Video Installation Guidance

Because RO systems and plumbing layouts can vary, there are multiple valid ways to install an inline filter.

If you are unsure about your setup, we recommend:

• Searching YouTube for “inline RO filter installation”
• Watching a video that matches your system type
  (under-sink RO, countertop RO, post-filter installation, etc.)

Visual step-by-step videos are often very helpful and can make installation easier and faster.