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( 1 ) OJ NO L 54 , 5 . 3 . 1979 , P . 1 .

( 2 ) OJ NO L 195 , 29 . 7 . 1980 , P . 6 .

( 3 ) OJ NO L 340 , 9 . 12 . 1976 , P . 19 .

COMMISSION REGULATION ( EEC ) NO 2310/80

OF 3 SEPTEMBER 1980

LAYING DOWN FOR THE 1980/81 AND 1981/82 WINE-GROWING YEARS CONDITIONS OF USE OF ION EXCHANGE RESINS AND DETAILED IMPLEMENTING RULES FOR THE PREPARATION OF RECTIFIED CONCENTRATED GRAPE MUST

THE COMMISSION OF THE EUROPEAN

COMMUNITIES ,

HAVING REGARD TO THE TREATY ESTABLISHING THE EUROPEAN ECONOMIC COMMUNITY ,

HAVING REGARD TO COUNCIL REGULATION ( EEC ) NO 337/79 OF 5 FEBRUARY 1979 ON THE COMMON ORGANIZATION OF THE MARKET IN WINE ( 1 ), AS LAST AMENDED BY REGULATION ( EEC ) NO 1990/80 ( 2 ), AND IN PARTICULAR ARTICLE 46 ( 6 ) THEREOF ,

WHEREAS THE COUNCIL RECENTLY AUTHORIZED THE PREPARATION AND USE OF RECTIFIED CONCENTRATED GRAPE MUST ; WHEREAS POINT 1 A ( H ) OF ANNEX III TO REGULATION ( EEC ) NO 337/79 PERMITS THE USE OF ION EXCHANGE RESINS FOR THE PREPARATION OF THIS PRODUCT , UNDER CONDITIONS TO BE LAID DOWN ; WHEREAS THE CONDITIONS OF USE OF SUCH RESINS MUST THEREFORE BE LAID DOWN ;

WHEREAS IN SO DOING ACCOUNT MUST BE TAKEN OF THE PROVISIONS ALREADY ADOPTED AT COMMUNITY LEVEL BY COUNCIL DIRECTIVE 76/893/EEC OF 23 NOVEMBER 1976 ON THE APPROXIMATION OF THE LAWS OF THE MEMBER STATES RELATING TO MATERIALS AND ARTICLES INTENDED TO COME INTO CONTACT WITH FOODSTUFFS ( 3 ), AND OF COMMUNITY AND NATIONAL PROVISIONS ADOPTED IN IMPLEMENTATION OF THE SAID DIRECTIVE ;

WHEREAS THE AUTHORIZED TREATMENTS MUST BE SUCH AS TO ENSURE THAT THE PRODUCT OBTAINED PRESENTS NO HAZARD TO HEALTH ; WHEREAS PROVISION MUST THEREFORE BE MADE FOR THE INSPECTION OF THE SUBSTANCES USED AND FOR THE METHODS OF ANALYSIS TO BE USED IN THE COURSE OF SUCH INSPECTIONS ;

WHEREAS STUDIES CONCERNING SUPERVISION OF THE USE OF ION EXCHANGE RESINS ARE IN PROGRESS AT COMMUNITY LEVEL ; WHEREAS , PENDING THE RESULTS OF THIS WORK , THE APPLICATION OF THIS REGULATION SHOULD BE LIMITED TO TWO WINE-GROWING YEARS ;

WHEREAS THE MEASURES PROVIDED FOR IN THIS REGULATION ARE IN ACCORDANCE WITH THE OPINION OF THE MANAGEMENT COMMITTEE FOR WINE ,

HAS ADOPTED THIS REGULATION :

ARTICLE 1

ION EXCHANGE RESINS MAY BE USED FOR THE PREPARATION OF RECTIFIED CONCENTRATED GRAPE MUST ONLY UNDER THE SUPERVISION OF AN OENOLOGIST OR TECHNICIAN , AND IN INSTALLATIONS APPROVED BY THE AUTHORITIES OF THE MEMBER STATE ON WHOSE TERRITORY THE RESINS ARE USED . SUCH AUTHORITIES SHALL LAY DOWN THE DUTIES AND RESPONSIBILITY INCUMBENT ON APPROVED OENOLOGISTS AND TECHNICIANS .

ARTICLE 2

THE ION EXCHANGE RESINS WHICH MAY BE USED ARE STYRENE AND DIVINYLBENZENE COPOLYMERS CONTAINING SULPHONIC ACID OR AMMONIUM GROUPS . THEY MUST COMPLY WITH DIRECTIVE 76/893/EEC AND COMMUNITY AND NATIONAL PROVISIONS ADOPTED IN IMPLEMENTATION THEREOF . IN ADDITION , WHEN TESTED BY THE METHOD OF ANALYSIS LAID DOWN IN THE ANNEX , THEY MUST NOT LOSE MORE THAN 1 MG/L OF ORGANIC MATTER INTO ANY OF THE SOLVENTS LISTED .

THEIR REGENERATION MUST BE EFFECTED WITH SUBSTANCES PERMITTED FOR USE IN THE PREPARATION OF FOODSTUFFS .

ARTICLE 3

THIS REGULATION SHALL ENTER INTO FORCE ON THE THIRD DAY FOLLOWING ITS PUBLICATION IN THE OFFICIAL JOURNAL OF THE EUROPEAN COMMUNITIES .

IT SHALL APPLY FROM 1 SEPTEMBER 1980 TO 31 AUGUST 1982 .

THIS REGULATION SHALL BE BINDING IN ITS ENTIRETY AND DIRECTLY APPLICABLE IN ALL MEMBER STATES .

DONE AT BRUSSELS , 3 SEPTEMBER 1980 .

FOR THE COMMISSION

FINN GUNDELACH

VICE-PRESIDENT

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ANNEX

THE USA METHOD FOR ORGANIC MATTER IN ION EXCHANGE RESINS

DETERMINATION OF THE LOSS OF ORGANIC MATTER FROM ION EXCHANGE RESINS

1 . SCOPE AND FIELD OF APPLICATION

THE METHOD DETERMINES THE LOSS OF ORGANIC MATTER FROM ION EXCHANGE RESINS .

2 . DEFINITION

THE LOSS OF ORGANIC MATTER FROM ION EXCHANGE RESINS :

THE LOSS OF ORGANIC MATTER IS DETERMINED BY THE METHOD SPECIFIED .

3 . PRINCIPLE

EXTRACTING SOLVENTS ARE PASSED THROUGH PREPARED RESINS AND THE WEIGHT OF ORGANIC MATTER EXTRACTED IS DETERMINED GRAVIMETRICALLY .

4 . REAGENTS

ALL REAGENTS SHOULD BE OF ANALYTICAL QUALITY GRADE .

EXTRACTING SOLVENTS :

4.1 . DISTILLED WATER OR DE-IONISED WATER OF EQUIVALENT PURITY .

4.2 . ETHANOL , 15 % V/V . PREPARE BY MIXING 15 VOLUMES OF ABSOLUTE ETHANOL WITH 85 VOLUMES OF WATER ( 4.1 ).

4.3 . ACETIC ACID , 5 % M/M . PREPARE BY MIXING 5 PARTS OF WEIGHT GLACIAL ACETIC ACID WITH 95 PARTS BY WEIGHT OF WATER ( 4.1 ).

5 . APPARATUS

5.1 . ION EXCHANGE CHROMATOGRAPH COLUMNS .

5.2 . MEASURING CYLINDERS , CAPACITY 2 L .

5.3 . EVAPORATING DISHES , CAPABLE OF WITHSTANDING A MUFFLE FURNACE AT 850 * C .

5.4 . DRYING OVEN , THERMOSTATICALLY CONTROLLED AT 105 + OR - 2 * C .

5.5 . MUFFLE FURNACE , THERMOSTATICALLY CONTROLLED AT 850 + OR - 25 * C .

5.6 . ANALYTICAL BALANCE , ACCURATE TO 0.1 MG .

MG .

5.7 . EVAPORATOR , HOT PLATE OR INFRA-RED EVAPORATOR .

6 . PROCEDURE

6.1 . ADD TO EACH OF THREE SEPARATE ION EXCHANGE CHROMATOGRAPHY COLUMNS ( 5.1 ) 50 ML OF THE ION EXCHANGE RESIN TO BE TESTED , HAVING BEEN WASHED AND TREATED IN ACCORDANCE WITH THE MANUFACTURERS DIRECTION FOR PREPARING THEM FOR USE WITH FOOD .

6.2 . PASS THE THREE EXTRACTING SOLVENTS ( 4.1 , 4.2 AND 4.3 ) SEPARATELY , THROUGH THE PREPARED COLUMNS ( 6.1 ) AT A FLOW RATE OF 350 TO 450 ML/H . DISCARD THE FIRST LITRE OF ELUATE IN EACH CASE AND COLLECT THE NEXT TWO LITRES IN MEASURING CYLINDERS ( 5.2 ).

6.3 . EVAPORATE THE THREE ELUATES OVER A HOT PLATE OR INFRA-RED EVAPORATOR ( 5.7 ) IN SEPARATE EVAPORATING DISHES ( 5.3 ) WHICH HAVE BEEN PREVIOUSLY CLEANED AND WEIGHTED ( M0 ). PLACE THE DISHES IN AN OVEN ( 5.4 ) AND DRY TO CONSTANT WEIGHT ( M1 ).

6.4 . AFTER RECORDING THE CONSTANT WEIGHT ( 6.3 ), PLACE THE EVAPORATING DISH IN THE MUFFLE FURNACE ( 5.5 ) ASH TO CONSTANT WEIGHT ( M2 ).

6.5 . CALCULATE THE ORGANIC MATTER EXTRACTED ( 7.1 ). IF THE RESULT IS GREATER THAN 1 MG/L , CARRY OUT A BLANK TEST ON THE REAGENTS AND RECALCULATE THE CONTENT OF ORGANIC MATTER EXTRACTED .

THE BLANK TEST SHOULD BE CARRIED OUT BY REPEATING SECTIONS 6.3 AND 6.4 BUT USING TWO LITRES OF THE EXTRACTING SOLVENT , TO GIVE WEIGHTS OF M3 AND M4 IN SECTIONS 6.3 AND 6.4 RESPECTIVELY .

7 . EXPRESSION OF RESULTS

7.1 . FORMULA AND CALCULATION OF RESULTS .

THE ORGANIC MATTER EXTRACTED FROM ION EXCHANGE RESINS , IN MG/L , IS GIVEN BY :

500 ( M1 - M2 )

WHERE M1 AND M2 ARE IN G .

THE CORRECT ORGANIC MATTER EXTRACTED FROM ION EXCHANGE RESINS , IN MG/L , IS GIVEN BY :

500 ( M1 - M2 - M3 + M4 )

WHERE M1 , M2 , M3 AND M4 ARE IN G .

7.2 . THE DIFFERENCE IN THE RESULTS BETWEEN TWO PARALLEL DETERMINATIONS CARRIED OUT ON THE SAME SAMPLE SHALL NOT EXCEED 0.2 MG/L .