Typical Physical & Chemical Characteristics

Polymer Matrix Structure

Polystyrene crosslinked with DVB

Functional Group

R-N(CH₃)₂(C₂H₄OH)⁺ 

Ionic Form, as shipped

Chloride (Cl^-)

Physical Form And Appearance

Clear Spherical Beads

Sphericity

95% min.

Screen Size Range
--- U.S. Standard Screen

16-50 mesh, wet

Particle Size Range

+1.2 mm < 5%, -0.3 mm < 1%

Uniformity Coefficient

1.6 max.

Water Retention, Cl^- form

37-44%

Swelling Cl^- → OH^-

15% max.

Shipping Weight, Cl^- form

680-760 g/l (44 lbs/cu.ft, approx.)

Total Exchange Capacity, Cl^- form

1.5 eq/l min.

pH Range

0-14

Suggested Operating Conditions

Maximum Temperature
Cl^- form
OH^- form

60ºC (176ºF) max.
40ºC (105ºF) max.

Minimum Bed Depth

0.6 m (24 inches)

Backwash Expansion

50-75% bed expansion

Regeneration
Regenerant Concentration
Flow Rate
Contact Time

2-6% NaOH
2 to 4 BV/h (0.25 to 0.50 gpm/cu.ft)
At least 60 Minutes

Displacement Rinse Rate

Same as Regenerant Flow Rate

Displacement Rinse Volume

10-15 gallons/cu.ft

Fast Rinse Rate

Same as Service Flow Rate

Fast Rinse Volume

35-60 gallons/cu.ft

Service Flow Rate

4-8 BV/h (1.0-5.0 gpm/cu.ft)

Hydraulic Properties

Pressure Drop: The graph above shows the expected pressure loss per foot of bed depth as a function of flow rate at various temperatures.

Backwash: After each cycle the resin bed should be backwashed at a rate that expands the bed 50 to 75 percent. This will remove any foreign matter and reclassify the bed. The graph above shows the expansion characteristics of PA104 in Cl^- form.