Softening Resin ProSoft™ Heavy Duty
ProSoft Heavy Duty is just that. Manufactured in special runs to provide one of the toughest softening resins around. With a 10% crosslink and 35,000 grain capacity at 15 lbs of salt, ProSoft Heavy Duty is perfect for industrial applications involving rigorous backwashing or high chlorine levels.
ER10006 Pressure Drop Graph
PRESSURE DROP — The graph above shows the expected pressure loss per foot of bed depth as a function of flow rate at various temperatures.
ER10006 Backwash Graph
BACKWASH — The graph above shows the expansion characteristics as a function of flow rate at various temperatures.
ER10006 Softening Capacity Graph
SOFTENING CAPACITY — Capacity is based on 2:1 Ca:Mg ratio, 500 ppm TDS as CaCO3, 0.2% hardness in the salt, and 10% brine concentration applied co-currently through the resin over 30 minutes. No engineering downgrade has been applied.
ProSoft Heavy Duty (Hydrogen Form) can be used as the cation component in a variety of demineralization configurations where a hydrogen form cation resin is coupled with a hydroxide form anion resin. The high density of ER10007 provides ideal separation in polishing mixed beds. ProSoft Heavy Duty (Hydrogen Form) has higher total capacity and lower chemical efficiency compared to ProSoft Premium (Hydrogen Form).
ER10006 Operating Capacity Graph
OPERATING CAPACITY — Capacity is based on 500 ppm of stated salt (as CaCO3) with 0% alkalinity, 36 inch bed depth, flow rate of 2 to 4 gpm per cu.ft., and a minimum of 30 minutes chemical injection time. Sulfuric acid concentration must be stepwise when calcium concentration exceeds 20% of total cations. No engineering downgrade has been applied.
High Temperature Use
ProSoft Heavy Duty is suitable for operation at temperatures as high as 280°F. At temperatures above 212°F, dissolved oxygen in the feedwater is a powerful oxidant and can chemically damage the resin. Oxygen levels in the feed should be reduced to less than 0.05 ppm to ensure a reasonable service life of the resin.
ProSoft™ is a trademark of Safe Water Technologies, Inc.
  10% divinylbenzene  
  Uniform particle size, low pressure drop  
  Superior physical stability  
  Low color throw  
  Conforms to paragraph 21CFR173.25 of the Food Additives Regulations of the US FDA  
  Certified to NSF/ANSI Standard 61 *  
  * NSF/ANSI-61 compliance requires conditioning with a minimum 20 bed volume rinse prior to first use.  
Sodium Form ER10006
Hydrogen Form ER10007
Polymer Structure Styrene/DVB
Polymer Type Gel
Functional Group Sulfonic Acid
Physical Form Spherical beads
Resin Color Amber
Ionic Form (as shipped) Sodium or Hydrogen
Total Capacity
  Sodium Form
  Hydrogen Form
> 2.2 meq/mL
> 2.0 meq/mL
Water Retention
  Sodium Form
  Hydrogen Form
39 to 45%
46 to 52%
Swelling (Na to H) 4 to 8%
Screen Size Distribution 16 to 50 (US mesh)
Maximum Fines Content 1% (< 50 mesh)
Maximum Sphericity 93%
Uniformity Coefficient 1.6 approx.
Approx. Ship. Wt.
  Sodium Form
  Hydrogen Form
54 lb/cu.ft.
52 lb/cu.ft.
Maximum Temperature
  Sodium Form
  Hydrogen Form
280°F (138°C)
265°F (130°C)
Minimum Bed Depth 24 inches
Backwash Expansion 25 to 50%
Maximum Pressure Loss 25 psi
Operating pH Range 0 to 14
Regenerant Concentration
  Salt Cycle
  Hydrogen Cycle (Option 1)
  Hydrogen Cycle (Option 2)
10 to 15% NaCl
5 to 10% HCl
1 to 8% H2SO4
Regenerant Level 4 to 15 lb/cu.ft.
Regenerant Flow Rate 0.5 to 1.5 gpm/cu.ft.
Regenerant Contact Time > 20 minutes
Displacement Flow Rate Same as dilution
Displacement Volume 10 to 15 gal/cu.ft.
Rinse Flow Rate Same as service flow
Rinse Volume 35 to 60 gal/cu.ft.
Service Flow Rate 1 to 10 gpm/cu.ft.
*CAUTION: DO NOT MIX ION EXCHANGE RESINS WITH STRONG OXIDIZING AGENTS. Nitric acid and other strong oxidizing agents can cause explosive reactions when mixed with organic materials such as ion exchange resins.
SWT Ion Exchange Resin Guide
Cation Resin Selection Chart
Resin Capacity Comparison Chart
This information has been gathered from standard materials and or test data that is believed to be accurate and reliable. Nothing herein shall be determined to be a warranty or representation expressed or implied with respect to the use of such information or the use of the goods described for any particular purpose alone or in combination with other goods or processes, or that their use does not conflict with existing patent rights. No license is granted to practice any patented invention. It is solely for your consideration, investigation and verification.
Safe Water Technologies, Inc.
996 Bluff City Boulevard
Elgin, IL 60120 USA
Telephone: +1.847.888.6900
Facsimile: +1.847.888.6924

Last Updated: October 6, 2021