Derick Mussen Preventive Healthcare

Dowex AG50WX8 cation exchange resin 100 to 200mesh BioRad

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The resin is prepared in large batches (200 to 400 ml packed resin) by the following series of washing steps. These washes can be conveniently performed using a large Buchner funnel and filter paper to collect the resin between changes of wash solution.

1. Wash resin in >10 vol of 0.5 N NaOH until no color is observed in wash solution (resin will retain its buff color).

4. Wash with 5 to 10 vol of distilled H2O.

6. Wash with distilled H2O until pH = 9.

7. Store prepared resin indefinitely in 0.5 M NaCl/0.1 M Tris, pH 7.5, at 4°C.