C-600 MP Water Softening Resin Sodium Form

Aldex C-600 MP water softening resin is a premium grade, highly cross-linked macroporous strong acid cation resin supplied in the sodium (Na) form or hydrogen (H) form upon request. Aldex C-600 MP has a pore structure that allows for high regeneration efficiency and low leakage to be achieved versus other highly cross-linked macroporous resins. Due to this structure Aldex C-600 MP has exceptional physical and chemical stability and is ideal for high temperature applications and is recommended for use in treating waters with high oxidant levels.

Download Aldex C-600MP Technical Bulletin (PDF)

Physical Chemical Properties

Resin Composition:S-DVB M/P resin
Ionic Form as Shipped: Na+
Functional Group:HSO3
Physical Form:Dark beads
Moisture Content (Na+ Form): 54 to 61%
Total Capacity (Na+ Form_:1.45 to 1.55 eq/l minimum
32.7 kilograins as per cubic foot
Odor and Taste: None
Specific Gravity:1.21 to 1.23
Net Weight (as shipped): 50 lbs per cubic foot
Particle Size:16 to 50 mesh - Less than 0.5% through 50 mesh
pH limit:0 to 14
Mean Diameter650 ± 50 µm
Uniformity Coefficient 1.6 to 1.7

Recommended Operating Conditions

Influent pH:1 to 14
Maximum Temperature:300 °F
Temp Limit:

Hydrogen Form
Sodium Form

Bed Depth:Minimum 24”
Service Flow Rate:2 US GPM per cubic foot
Backwash Flow Rate:See Fig. 2
Regenerant:Sodium Chloride (NaCl)
Regenerant Strength:10%
Regenerant Flow Rate:0.3 to 1.0 US GPM per cubic foot of resin
Regenerant Dosage Level: See Fig. 3
Slow Rinse (Displacement) Flow Rate:0.3 to 1.0 US GPM per cubic foot of resin
Rinse Water Requirements:25 to 75 US GPM per cubic foot
Service Flow Rate:2 US GPM per cubic foot
Exchange Capacity:See Fig. 3
Reversible Swelling H+ to Na+6% maximum

C-600 MP Features

No Chlorinated Solvents

The absence of chlorinated solvents in the manufacturing of Aldex C-600 MP results in very low TOC leakage.

Very low color, taste or odor

Aldex C-600 MP meets the requirements for paragraph 173.25 of the Food Additive Regulation of the U.S. Food and Drug Administration.

High Capacity

30,000 grains of softening capacity when regenerated with 15 lbs of NaCl per cubic foot and 20,000 grains with 6 lbs of NaCl per cubic foot ensuring high efficiency and low operating costs.

Long Life

Strong and durable beads insure long service life.


Over 34 years of actual field usage by thousands of customers demonstrate the reliability of Aldex C-600 MP.

Safety Information

A material safety data sheet is available for Aldex C-600 MP. Copies can be obtained from Aldex Chemical Co., LTD. Aldex C-600 MP is not a hazardous product and is not WHMIS controlled.

Caution: Acidic and basic regenerant solutions are corrosive and should be handled in a manner that will prevent eye and skin contact. Before using strong oxidizing agents in contact with ion exchange resin, consult sources knowledgeable in the handling of these materials.

Pressure Drop

Fig. 1 Pressure Drop vs Flow Rate at various degrees Fahrenheit (F°)

Backwash Characteristics

Aldex C-600 MP should be backwashed for at least 10 minutes at a flow rate sufficient to cause 50% to 75% expansion of the resin bed.

Fig. 2 Hydraulic expansion data parameter flow rate GPM / FT3

Capacity Data

Fig. 3 Capacity Data

These suggestions and data are based on information we believe to be reliable. They are offered in good faith. However, we do not make any guarantee or warranty. We caution against using these products in an unsafe manner or in violation of any patents. Further, we assume no liability for the consequences of such actions.