INDION 225 Na is a high capacity strongly acidic cation exchanger in bead form. It is based on cross linked polystyrene and has a gel structure. The resin contains sulphonic acid functional groups. It is supplied moist in the sodium form.

INDION 225 Na is used most widely in sodium form for water softening application. It can be used also in two-stage de-ionising as the cation exchanger in the hydrogen cycle.

• Appearance :  Golden yellow beads
• Matrix :   Styrene divinylbenzene copolymer
• Functional Group :   Sulphonic acid
• Ionic form as supplied :   Sodium
• Total exchange capacity :   2.0 meq/ml, minimum
• Moisture holding capacity  : 43 - 50 %
• Shipping weight * :   830 kg/m³, approximately
• Particle size range :   0.3 to 1.2 mm
• > 1.2 mm :   5.0%, maximum
• < 0.3 mm :   1.0%, maximum
• Uniformity co-efficient . :   1.7, maximum
• Effective size :   0.45 to 0.55 mm
• Operating pH range :   0 to 14
• Maximum operating temperature :   140 ° C
• Resistance to reducing agents :   Good
• Resistance to oxidizing agents :   Generally good, chlorine should be absent

• HDPE Lined bags 25/50 lts
• LDPE bags 1 cft / 25 lts
• Super sack 1000 lts
• Super sack 35 cft
• MS drums with liner bags 180 lts
• Fiber drums with liner bags 7 cft

Ion exchange resins require proper care at all times.The resin must never be allowed to become dry. Regularly open the plastic bags and check the condition of the resin when in storage. If not moist, add enough clean demineralised water and keep it in completely moist condition. Always keep the resin drum in the shade. Recommended storage temp-erature is between 20 degree C and 40 degree C.

Acid and alkali solutions used for regeneration are corrosive and should be handled in a manner that will prevent eye and skin contact. If any oxidising agents are used, necessary safety precautions should be observedto avoid accidents and damage to the resin.