Division Ion exchange resins

The ion exchange resins which may be used in accordance with line item 6 of Table 1 of this Annex are styrene and divinylbenzene copolymers containing sulphonic acid or ammonium groups. They must comply with the requirements laid down in Regulation (EC) No 1935/2004 F1.... In addition, when tested by the analysis method laid down in the third paragraph of this Appendix, they must not lose more than 1 mg/l of organic matter into any of the solvents listed. They must be regenerated with substances permitted for use in the preparation of foodstuffs.

These resins may be used only under the supervision of an oenologist or technician and in installations approved by the F2appropriate authority. Nothing in this Regulation prevents the appropriate authority from using any power it has to specify the duties and responsibilities of approved oenologists and technicians.

Analysis method for determining the loss of organic matter from ion exchange resins: