GB 2635-1992Flue-cured tobacco (English PDF)

3.1 Terms

3.1.1 Groups It is formed by the classification of the closely related grades, on the basis of certain features related to the location, color and overall quality of the tobacco leaf.

3.1.2 Grading The grade of the tobacco leaves in the same group, which is classified according to the quality.

3.1.3 maturity The degree of maturity of tobacco leaves after modulation (including field and modulation maturity), the maturity is divided into the following levels:

3.1.3.1 Mellow The upper tobacco leaves that are reached a high degree of maturity in the field, and they are fully ripe after modulation.

3.1.3.2 Ripe color, which is divided into the following levels:

3.1.7.1 Deep The leaf surface is uniform in color and saturated in color and luster.

3.1.7.2 Strong The color is uniform, and the saturation is slightly worse.

3.1.7.3 Moderate The color is uniform yet and the saturation is general.

3.1.7.4 Weak The color is not uniform, and the saturation is poor.

3.1.7.5 Pale The color is not uniform, and the luster is light.

3.1.8 Length The distance from the end of the main veins of the leaf to the tip, which is expressed in cm.

3.1.9 Waste Tobacco leaf tissue is damaged, losing the strength and firmness of the strips, and basically has no use value (including disease spots, scorched tips and scorched edges due to the maturity increase of tobacco leaf), expressed by a percentage (%).

3.1.10 Injury The leaf loses its original integrity due to mechanical damage, and the damaged area of each leaf does not exceed 50%, expressed by a percentage.

3.1.11 Color The state of the related color, luster saturation and color value of the same type of tobacco leaves after modulation.

3.1.11.2 Orange

5.5 The bundled requirements of tobacco leaves shall be natural bundle with 25~30 leaves per bundle; the bundle head circumference is 100~120mm and the winding width is 50mm.

7.2.3 Oven inspection method

7.2.3.1 Instruments and utensils Analytical balance: sensitivity is 1/1000g. Electric oven (or other oven): It has a temperature adjustment device, and can automatically control the temperature in the range of ± 2°C; equipped with a 0 ~ 200°C thermometer; mercury silver ball is located at 1.5~2.0cm above the sample shelf. Only use the middle shelf. Glass dryer: equipped with desiccant. Sample box: made of aluminum, diameter 60 mm, height 25 mm, and marked with numbers on the lid and the side wall of the bottom box.

7.2.3.2 Operating procedures Approximately 1/4 of the leaves are uniformly extracted from the sample to be inspected; and quickly cut into small pieces or strips with a width not exceeding 5 mm. After mixing, take about 5~10g of the sample by a sample box with known dry weight; and write down the weight of the sample. After removing the cover, put it in an oven at a temperature of 100 ± 2°C. Since the temperature rises to 100 °C, bake for 2h; cover it; take it out; put it in a desiccator; cool to room temperature; and then weigh it. Calculate the percentage according to Formula (1): Moisture (%) = × 100% …………………. (1) NOTE: The determination of each batch of samples shall take parallel test; the difference between the absolute value of the two shall not exceed 0.5%; and the average value of the results of the parallel test shall be taken as the inspection result. If the error of the inspection result. The figures taken in the inspection results are subject to 0.1%; and the next digit is rounded off according to GB 8170.

7.4 Flameout tobacco inspection

7.4.1 Sampling of flameout tobacco inspection The sampling quantity is 5 positions for each piece; arbitrarily take two bundles for each piece; arbitrarily take 1 leave for each bundle. Take sample on average from all samples opened on site. Tobacco leaves that are not finished in piece; evenly take 10 bundles for each 50 kg; take 1 leave for each bundle; totally 10 leaves. For those less than 50kg, still take 10 bundles, 1 leave for each bundle.

7.4.2 Combustion method is used for flameout tobacco inspection. Each leave is transverse at its 1/3 cutters (that is, 1/3 of the leave tip and the 1/3 leave base are removed); and then cut into three blocks in the horizontal direction. After being ignited on an open flame, the flame is extinguished, meanwhile the time is counted to the last fire point; it is called afterglow time. Two of the three blocks with afterglow time less than 2s are the flameout leaves. After detection by this method, the flameout rate of tobacco leaves is calculated according to Formula (3): Flameout rate (%) = × 100% …………………. (3)

8.2 On-site inspection

8.2.1 The sampling quantity: each batch (referring to the same area, the same grade of flue-cured tobacco) is within 100 pieces, take 10% ~ 20% samples; if each batch is more than 100 pieces, take 5% ~ 10% samples. If necessary, increase the sampling ratio as appropriate.

8.2.2 Sampling of the finished pieces: sampling 5 ~ 7 positions from the center of each piece to its surroundings, about 3 ~ 5 kg.

8.2.3 Sampling of unfinished pieces: it may be inspected in full, or sampling 6 ~ 9 positions, about 3 ~ 5 kg, or 30 ~ 50 bundles according to the position.

8.2.4 The sampling samples shall be inspected in accordance with the provisions of Clause 7 of this Standard.

10.1.4 Packaging type There are two kinds of packaging: sack packaging and carton packaging.

10.1.4.1 Sack packaging The net weight of each pack is 50kg; and the package volume is 400mm×600mm× 800mm.

10.1.4.2 Carton or wooden box packaging The net weight of each box is 200kg; and the outer diameter is 1115mm×690mm×725mm.

10.2 Marking

10.2.1 Handwriting must be clear, and a marking card must be placed in the pack.

10.2.2 The contents marked in front of the pack (piece): a. Place of origin (province, county); b. Grade (capital and code); c. Weight (gross weight, net weight); d. Production year and month; e. Name of supplier.

10.2.3 The pack (piece) shall be marked with the grade and its code around

10.3 Transportation

10.3.1 When transporting packs (pieces), there must be coverings on top, tightly packed, securely covered, protected from sunlight and moisture.

10.3.2 Must not be transported with odor and toxic substances, and transport vehicles with odor and pollution shall not be shipped.

10.3.3 Handling must be done with care, and no pack-throwing or pack-hooking.

10.4 Storage

10.4.1 Stack height The grades 1~2 (excluding subgroup 2) first cured tobacco packaged in sacks is no more than 5 packs high; grades 3~4 is no more than 6 packs high. the re-dried tobacco is no more than 7 packs high. Cardboard packaging is not subject to this restriction. QB/T 2635-1992 "Flue-Cured Tobacco" Amendment No.1 This amendment was approved by the State Bureau of Quality and Technical Supervision on June 01, 1998 with the document ZJJH [1998] No. 027; and would be implemented since July 01, 1998. I. Article

3.1.9 Waste is changed as follows: Tobacco leaf tissue is damaged, losing the strength and firmness of the strips, and basically has no use value (including disease spots, scorched tips and scorched edges due to the maturity increase of tobacco leaf), expressed by a percentage (%). II. The values of waste in quality provisions (Table 3) of

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Note 3. 10. **Verification (USD

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