A Non-Separable Uniform Particle Size Mixed Bed lon Exchange Resin for Ultra Pure Water Production.

Product Name

Resin Ratio

Matrix

Functional Group

DOWEX MONOSPHERE MR-450 UPW

Note

Styrene-DVB Gel

Sulphonic Acid and Quaternary Amine

Guaranteed Sales Specification

Units

OH^-form

OH⁺form

Total exchange capacity.min.

eq/1
kgr/ft³ as CaCO₃

1.9
41.5

1.0
21.9

Water content

%

46-53

55-65

Bead size distribution
  Mean particle size
  Uniformity coefficient,max

μm
　

360± 50
1.1

590± 50
1.1

Whole uncracked beads,min

%

95

95

Crush strength
  Average,min.
  >200 g bead,min.

g/bead
%

350
95

Typical Physical and Chemical Properties

OH^-from

H⁺from

  Particle density, approx.

g/ml

1.22

1.08

  Shipping weight, approx.
　

g/l
lbs/ft²

705
44

Recommended Operating Confitions

  Maximum operating temperature

60℃(140℉)

  Resin  bed  depth, min.

800 mm (2.6 ft)

  Flow rates:
      Service

10-60 m/h (4-24 gpm/ft²)

  Pressure drop

see figure 1

UPW Mixed Resin Specific Properties

  Cationic resin conversion to H, min.                                                                  99.7%

  Anionic resin conversion to                 OH, 95% min.               CO₃, 5% max.             Cl, 0.1%

  Rinse characteristics:
  UPW grade resins are rinsed to meet stringent ionic and organic residuals:
  •  Ionic conductivity rinse down to 0.055 us/cm (see figure 2)
  •  TOC rinse down to 4 ppb (+)(see figure 2)