Rs 0.817.422 International Convention Of 5 June 1935 For The Unification Of The Methods Of Analysis Of The Wines In International Trade (With Protocol Of Signature)

Original Language Title: RS 0.817.422 Convention internationale du 5 juin 1935 pour l’unification des méthodes d’analyse des vins dans le commerce international (avec protocole de signature)

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0.817.422 original text International Convention for the unification of the methods of analysis of wines in international trade concluded in Rome on 5 June 1935 Instrument of ratification deposited by the Switzerland on 28 November 1935 entered into force for the Switzerland on 15 June 1937 his Majesty the King of Bulgarians; the President of the Republic of the Chile; the President of the Spanish Republic; the President of the French Republic; His Highness Serenissima the Regent of the Kingdom of Hungary; His Majesty the King of Italy; His Majesty the Sultan of the Morocco; the President of the Republic of Poland; His Majesty the King of Romania; the Switzerland Federal Council; the President of the Czechoslovak Republic and his Highness the Bey of Tunis, considering the need to facilitate international transactions in terms of wine, that the results analysis of wines can be easily understood and surely and speedily interpreted, have decided to conclude an agreement on unification of methods of analysis of the wines covered by international trade transactions between them.
Accordingly, they were appointed to their Plenipotentiaries, namely: (follow the names of the Plenipotentiaries) which, to this duly authorized, met in Rome, at the headquarters of the international Institute of Agriculture and having exchanged their powers who have been regular, have agreed to the following: art. 1 to ensure the application of the principles set by the art. 2 and 3 below, the High Contracting Parties undertake to introduce wines in their regulation of requirements for analytical methods of wine, applicable in the case of disputes that might arise in international trade.

Art. 2 on the basis of art. 1 above, the High Contracting Parties undertake to introduce in their national regulations, and for the only international wine trade, prescriptions for the quick analysis of wines, in line with those contained in Annex A to this agreement.

Art. 3 on the basis of art. 1 above, the High Contracting Parties undertake to introduce in their national regulations, and for the only international wine trade, requirements for the detailed analysis of the wines comply with Annex B of this agreement.

Art. 4 in the event of disputes on the application of art. 2 and 3 or the interpretation and the application of the rules mentioned, one stakeholder may, in agreement with the other party, request the international Institute of Agriculture to conduct a test of conciliation and resort to the Court in last instance permanent international justice, after having exhausted all means of agreement.
The purpose of the conciliation test, a Committee, in which the States concerned and the international Institute of Agriculture designate each an expert, will examine the dispute, taking into account all documents and evidentiary elements. This Committee will report, that the international Institute of Agriculture shall notify each interested country, freedom to further action Governments being reserved.
Interested Governments undertake to bear the costs of the mission entrusted to experts in common.

See note on page 1.
The Permanent Court of international justice was dissolved by resolution of the Assembly of the League of Nations of 18 April 1946 (FF 1946 II 1186) and replaced by the International Court of justice (RS 0.193.501).
See note on page 1.
See note on page 1.

Art. 5. countries that have not signed the Convention will be allowed to accede at their request.
Membership will be notified through diplomatic channels to the Italian Government and by the contracting countries, as well as the international Institute of Agriculture, which will inform in turn the international Office of wine.

See note on page 1.

Art. 6. all Contracting and member country can, at any time, notify the Italian Government that the Convention is applicable to all or part of its Colonies, protectorates and territories under mandate, territory subject to its sovereignty or its authority, or all territories under his suzerainty. The Convention will apply to all the territories designated in the notification. Otherwise this notification, the Convention will not apply to these territories.

Art. 7. the contracting or acceding countries who will want to make a change to the text of annexes A or B of the Convention, shall give communication to the international Institute of Agriculture.
The latter will submit the text of the amendments requested approval of a Committee of five experts, appointed by him after consultation with the Governments of the Contracting States on personalities called to be part. The members of this Commission will be renewed every three years. She'll hear an expert designated by the Government asking for the change.
In the event that the requested changes would be approved by the Commission, the Institute will focus this result to the knowledge of the contracting or acceding countries, inviting them to give their membership within the period of six months. At the expiration of this period, the contracting or acceding countries who have not responded will be considered as acceptants.
The change will take effect six months after the date of the letter by which the international Institute of Agriculture will be communicated to the contracting or acceding countries the unanimous support to the proposed amendment, as it results from the application of paragraph above.
On the request of a contracting or acceding country the Commission of five experts referred to in the paragraphs above may also propose international analytical methods for the determinations that do not appear in Appendices A and B, and specify them in the case of simple recommendation for a determined dosage.
The follow-up to these proposals will be identical to that which is indicated for methods, proposed by a contracting country or member changes.

See note on page 1.
See note on page 1.
See note on page 1.

Art. 8. contracting or acceding States are committed to share between them the series of laws, decrees and regulations concerning wines and their national methods of analysis and to make known the official government designated customs offices to perform these operations, as well as formal institutions for the issuance of certificates. The range of these documents and information should be sent also to the international Institute of Agriculture, which will inform the international Office of wine.

See note on page 1.

Art. 9. the contracting or acceding countries who will denounce this Convention, either for the whole of his territories, either only for all or part of its Colonies, protectorates, Possessions or territories referred to in art. 6 must notify it to the Italian Government, which will inform immediately the other acceding States and the international Institute of Agriculture, by the date on which it received this information.
The denunciation will produce its effects only with respect to the country that it will be notified or the Colonies, protectorates, Possessions or territories referred in the Act of whistleblowing, and that only one year after the notification will be received from the Italian Government.

See note on page 1.

Art. 10. the present Convention will be ratified as soon as possible and the ratifications shall be deposited with the Italian Government.
Notice of every ratification will be given by the Italian Government to the other contracting countries, as well as the international Institute of Agriculture.

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Art. 11. each country shall have the right to declare, at the time of its ratification, that it subordinates the implementation of this agreement, in which case, the application of the Convention on the part of certain named countries.
This Convention will enter into force once it has been ratified by at least three sovereign countries, unconditionally or subject to conditions which occurred.
In this case, the entry into force will begin six months after the date of the deposit of the third ratification.
For all other countries ratifying or members, the Convention will enter into force within a period of six months, as the filing of their ratification or accession.
In faith whereof, the respective Plenipotentiaries have signed the present Convention.
Done in Rome, on June five thousand nine hundred and thirty-five, in a single copy which shall be deposited in the archives of the Ministry of Foreign Affairs of Italy.
A certified copy in line, will be given through the diplomatic channel to each signatory to this Convention, by the care of the Royal Italian Ministry of Foreign Affairs.
(Follow signatures)

Schedule A quick scan method this method involves necessarily: an organoleptic examination. The determination of the density. The dosage of alcohol. The dosage of dry extract. Assessment of reductive contents. The appreciation of the sulphate content. Determination of mineral materials (ASH) and their alkalinity. The dosage of the acidities (total and volatile). The dosage of sulphur dioxide. Eventually the search antiseptics, sweeteners, and review of odorous matter.

Organoleptic examination. -Organoleptic scrutiny is essential. It must include: aspect of wine, colour, clarity, smell, tasting, held in air (24 hours at 15 ° C) If it seems necessary, complemented by the microscopy, in order to check if the wine contains an abnormal proportion of vinegar or other bacteria (germs of diseases such as: turn, bitterness, fat, etc).
The result of the organoleptic and microscopic examination can bring the chemist to renounce the summary analysis and using the method of detailed analysis right away.
When the wine is disturbed, proceed to its filtration on paper, taking care to cover the funnel and run the analysis on the filtered wine. Mention of this operation must be included in the final report.
Density. -After having eliminated, if there is place, carbonic acid, determine the density at 15 ° as possible too nearby temperature, using either a centesimal hydrometer, or the picnometre, or the hydrostatic balance. The result reduced to 15 ° will have 4 decimal places. Eligible discrepancies between two results must be limited to 4 decimal.
Alcoholic degree. -Proceed by distillation of wine beforehand and exactly neutralized and determination of the fineness of the distillate, or with alcoholmeter carefully controlled, the picnometre, either the hydrostatic balance. The result reduced to 15 ° will be expressed at the same time, in accordance with the Convention of 1912, in grams per litre and per cent in volume (degree Gay-Lussac and tenth of a degree). The eligible gap on this last mode of expression will not exceed 0 °, 1 more or less.
Dry extract. -Dry extract will be determined by gravity method, based on the specific weight of the wine at 15 °, and the alcoholic distillate at 15 °. In the expression of the result, it will be essential, pending the findings of ongoing comparisons, and a subsequent agreement on this subject, to indicate the formula used to draw from these data the value of dry extract. (Formulas of Akermann, of Houdart, of Dujardin Salleron, of Roussopoulos, etc.) The gap between two results shall not exceed 0.5 per liter gram.
Reductive materials. -In ordinary dry wines, practice a qualitative test, using wine discolored by the minimum dose of bleach black, and using the amount of liquor cupropotassique corresponding to a gram or two grams of sugar switched per litre, operating on 10 cc. wine. Express the result in the following way: reductive < 1 gram or reductive materials > 1 gram but < 2 grams. materials if the test indicates a quantity of sugar interverti superior to 2 grams per litre, perform the exact dosage by using the method specified in the method detailed Sulfates.-find qualitatively sulfate using a liquor titled barium chloride, plus acid hydrochloric. expressing the results in the following way: sulfate of potassium per litre: 1 gram or > 1 gram but < 2 grams or > 2 grams.
If the test indicates a quantity greater than 2 grams per litre, perform the exact dosage, using the procedure shown in the detailed method.
Minerals (ASH). -Calcination to red dark a quantity known wine and weighed white ash. If it is necessary, we can proceed by leaching.
Determine the alkalinity of total ash by the method to orange, with correction for phosphates determined by the colorimetric method.
Acidity: a. total acidity. -Place an exactly measured quantity of wine in a flat-bottomed flask, bring it to 80 ° by placing a few minutes in the water bath in order to hunt the carbonic acid, cool. Acid from a graduated burette, to fall into the wine a titled alkaline liquor (soda or potash). At the end of the operation, add the liqueur drip until full saturation. See this one touches on sensitive litmus paper. Phenolphthalein is here strictly proscrit.b. Volatile acidity. -Lead the volatile acids by a current of water vapour, the wine experience being previously heated in a double boiler set boiling (modified Blarez method). Get the power of steam, taking care not to let down the level of the wine. Titrate the acidity of the distillate using sensitive sunflower as an indicator. We can for this last titration using phenolphthalein to the condition to mention on the analysis report.
If wine contains sulphur dioxide, measure it in 2 forms in the distillate. Acidity corresponding to the free sulphur dioxide and half of the corresponding to combined sulphur must be deducted from the volatile acidity.
c. Expression of results. -The results of the assays of acidity expressed in accordance with the Convention of 1912, in cc. normal alkaline liquor per liter of wine, and, jointly, in the form dedicated by usage in the country where the analysis was conducted. Eligible discrepancies between two dosages may not exceed 1 cc. Liquor alkaline N to total acidity, and 0. cc, 2 for volatile acids.

Sulphur dioxide: a. free sulphur dioxide (in white wines only). -Direct titration with acid of a titled liquor of iodine, using starch as indicateur.b jobs. Total sulphur dioxide. -Use either method Rippert (titration by a liquor of iodine, the wine having been previously treated by an excess of alkaline liquor, and then acidified with sulfuric acid), or the method of Haas (travel by acid phosphoric and training by a current of carbonic acid, oxidation by iodine and dosage titration or weight).

Mention should be made on the form of analysis of the method used.
Eligible discrepancies between two dosages charged the same day are 0.002 grams for the free sulphur dioxide and 0.005 gram for total sulphur dioxide.

The Switzerland is not a party to this convention.
The Switzerland is not a party to this convention.

State on June 10, 1997 Annex B detailed analytical method organoleptic examination. -Detailed microscopic examination. For the determination of density, of the dosagede alcohol, dry extract, mineral materials, total and volatile acidities, and of sulphur dioxide, proceed as described in the quick method.
Reductive materials: a. Defecation of the wine. -Proceed to the defecation wine, either by the method to the sous-acetate of lead, or by the method to the acidic sulphate of mercury. For the application of this method, it is necessary to take special precautions if wine contains the saccharose.b. Dosage. -Use only the methods using cupropotassiques liqueurs. Proceed either by titrimetry (methods to ferrous sulfate and permanganate or iodine and Thiosulphate), either by gravity (weighing of the oxydule copper obtained from wine defecated lead and rigorously neutral, or regenerated copper). This method is only recommended with wine high in sugar (over 10 grams per liter) .c. polarimetric review. -Operate preferably on liquor defecated in acid sulphate of mercury. Review to the tube of 20 centimeters to 20 ° C.

Dosage of sucrose - proceed prior to the inversion and the methods described above by taking the necessary precautions.
The dosages of reductive contents and sucrose results will be expressed in grams of sugar per liter, in terms of reductive substances, interverti and grams per litre for sucrose.
Tartaric acid. -The lack of methods based on the precipitation of the bitartrate and volumetric titration is recognized, it is recommended to use the methods in the racemate of calcium (Kling method). The results are to express in alkaline liquor N cc and bitartrate potassium per litre.
The alkalinity of the ash. -Operate on the total ash of 50 cc. wine obtained as it says in the quick scan method. Dosage titration in return after dissolving in sulfuric acid 10, addition of calcium chloride, and using phenolphthalein as indicator (Farnsteiner method).
Express the results both in cc. normal liquor, and in grams per litre potassium bitartrate. Gap eligible cc. 0.5 total phosphorus. -Destroy organic matter by the mercuro-nitric method and rush the phosphoric acid by conventional methods. Express the results in grams of phosphoric anhydride per litre. Gap eligible 0.010 grams per liter.
Sulfates. -Precipitation to the boil in hydrochloric medium (1 to 2%) by an excess of barium chloride, filtration, calcination and weighing. For wines strongly sulphites operate in a stream of carbonic acid. Express the results in grams of neutral sulfate of potassium per litre. Gap eligible 0.050 grams.
Acid fixed. -Determine acidity fixed by subtracting the total acidity, volatile acidity (uncorrected).

Protocol of signature


The Conference acknowledged the inability to insert in the text of the Convention, in which case some dosages, methods of analysis of accuracy sufficiently proven by the experience, she believes simply possible to recommend for these special determinations, to carry out that in some specific cases, the following methods, that it considers the best in the current state of wine science.
Acid citric. - qualitative research by Stahre method or the Deniges method. Possible dosage by the method of Kunz.
Lactic acid. -Use either method Bonifazi if wine contains between 1 and 4 grams of lactic acid, and less than 5 grams of sugar, either the method by chromic oxidation of Sémichon and Flanzy.
The results will be expressed both in centimeters cubes and alkaline liquor N grams of lactic acid per litre.
Succinic acid. -Use the method Sémichon-Flanzy to the condition to check the purity of the succinate of ammonia obtained (deduction of ashes or extraction to the ether, and silver nitrate titration).
Glycerin. -Use the methods by training by the water vapour and dosage by chromic oxidation. (Method Ferré-Bourges, modified by Sémichon and Flanzy or von Fellenberg method).
Potash. -Dosage to the State of perchlorate after destruction of organic matter by nitric acid and mercury.
(Follow signatures)

Scope of the convention on June 15, 1937, States parties Ratification or accession entry into force Belgium 2 December 1935 15 June 1937 Bulgaria December 15, 1936 15 June 1937 Italy April 16, 1936 15 June 1937 Portugal November 2, 1937 may 2, 1938 Romania 3 January 1938 July 3, 1938 Switzerland November 28, 1935 15 June 1937 State on June 10, 1997

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