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4. ?????????????????????

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?????????? ???? ??????? ??? ????? ??????? ?? ????????? ??? ?????????????, ??? ????? ??????????? ??? ???? ????????? ?????? pH 5-10. ?? ??? ?? ????? ???????? ??? ??????????? ???? ?? ? ??? ????????? ??? 4 ??? ?????? ??? 11. ?? ?? ? ???? ??? 3-11, ?? ????????? ??? ??????? ??????????? ???????? ??????? ???? ????????? ??? 10%. ?????????? ???? ????? ??????? ??? ???????? ????? ??????????, ????? ??? 5% ?????????? ?????, 5% ?????? ?????, 5% ??????? ?????, 10% ?????????????? ?????, ??? 25% ?????????? ?????. ?? ?????????? ???? ????? ?????????? ????? ????? ??????? ??? ????? ???????????? ??? ???? ???? ????? ??? ?????????? ????? ?????? ?????. ?????????? ???? ????? ???? ??????? ??? ??????? ???????????? ??????? ??? ??? ??????? ?????????????. ?? ?????????? ??????? ??? ????? ??????? ??? ????? ????????????. ?????????? ???? ????? ???? ????????? ???? ?????? ??????????? ????? ??? ???????????? ????? ??? ????????????, ??? ?? ????????????? ??????????? ??? ????????? ????????????.

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