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DOWEX(R) HCR-W2 dowex tm 50w×8 dowex 88 sodium form DOWEX HCR-W2, NA+ FORM dowex88ion-exchangeresin dowex marathon msc sodium form DOWEX 88 CATION-EXCHANGE RESIN Dowex HCR-S (E) S ion-exchange resin DOWEX 50 W X 2, NA(+)-FORM, 100-200 MESH DOWEX 50 W X 4, NA(+)-FORM, 200-400 MESH DOWEX MARATHON MSC CATION EXCHANGE RESI& DOWEX 50 W X 4 NA(+)-FORM 100-200 MESH CATION EXCHANGE RESIN, DOWEX(R) HCR-W2, H+ FORM CATION EXCHANGE RESIN, DOWEX(R) HCR-W2, NA+ FORM DOWEX 50 W X 8, NA(+)-FORM, STRONGLY ACI DIC, 100-200 MESH STYRENE-ETHYL STYRENE-SODIUM DIVINYLBENZENE SULFONATE POLYMER sodium,1,2-bis(ethenyl)benzene,1-ethenyl-2-ethylbenzene,styrene Ethenylbenzene,diethenylbenzene,ethylethenylbenzenepolymer,sulfonated,sodiumsalt Benzene,diethenyl-,polymerwithethenylbenzeneandethenylethylbenzene,sulfonated,sodiumsalts Diethenylbenzene polymer with ethenylbenzene and ethenylethylbenzene, sulfonated, sodium salts