The Omnipure Q5554-C100E is a 10" x 2.5" cation exchange softening cartridge engineered to reduce hardness and prevent scale deposits using FDA-grade C100E softener resin. Designed for the Q-Series twist-off system, this filter delivers up to 600 grains of hardness removal capacity at flow rates up to 0.5 GPM.
SPECIFICATIONS
Q5554-C100E Core Specs
Dimensions
10" × 2.5"
Standard inline size
Flow Rate
0.5 GPM
Maximum rated flow
Service Life
600 grains
Hardness capacity
Media Type
C100E Resin
FDA grade softener
Pressure Rating
125 PSIG
Maximum operating
Temperature
100°F max
Cold to warm water
TECHNICAL DETAILS
Complete Filter Data
| Manufacturer | Omnipure Filter Company |
| Model Number | Q5554-C100E |
| Series | Q-Series Twist-Off |
| Filtration Media | FDA-grade C100E cation exchange softening resin |
| Primary Function | Reduces water hardness and prevents scale deposits |
| Connection Type | Requires existing Q-Series head (1/4" QC, 1/4" NPT, or 3/8" NPT) |
| Recommended Use | Point-of-use softening, appliance protection, scale prevention |
COMPATIBILITY & APPLICATIONS
System Requirements and Use Cases
This Q5554-C100E is a replacement cartridge that requires an existing Omnipure Q-Series twist-off head, available with 1/4" quick-connect, 1/4" NPT female, or 3/8" NPT female fittings. Ideal for point-of-use water softening applications including coffee machines, ice makers, beverage equipment, and residential appliances where hard water causes scale buildup. The cation exchange resin actively removes calcium and magnesium ions responsible for hardness, extending equipment life and improving water quality. Replace when you notice declining performance or when hardness returns to treated water, typically based on inlet water hardness levels and total gallons processed.
💧 Pro tip: Track your inlet water hardness in grains per gallon to estimate filter life. At 10 GPG hardness, expect about 60 gallons of capacity. Higher hardness levels mean more frequent replacement, but protecting your equipment from scale damage is worth the maintenance schedule.
