GB2635-1992
Flue-cured tobacco
烤烟
GB 2635-1992 is a current mandatory Chinese national standard for Flue-cured tobacco. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Sep 1, 1992.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
GB 2635-1992 applies to bundled flue-cured tobacco that has been initially cured or redried but has not undergone fermentation. It serves as the mandatory basis for grading, purchasing, and handover transactions within the domestic market, while export supply is primarily based on physical samples. This standard is essential for all entities involved in the domestic trading and processing of raw tobacco leaves in China. It does not apply to fermented tobacco or finished tobacco products.
Technical requirements
The standard establishes a comprehensive grading system based on seven appearance factors: maturity, leaf structure, body, oil, color intensity, length, and waste. Manufacturers must strictly adhere to these visual quality factors to determine the exact grade of the tobacco. The system divides tobacco into groups based on stalk position (lower, middle, upper) and color (lemon, orange, brown), resulting in a complex classification of 42 distinct grades. Physical and chemical control factors are also specified, including strict limits on moisture content, sand content, and injury rates. The standard mandates specific packaging requirements, dictating that materials must be sturdy, dry, clean, and odorless. Each package must contain tobacco from the same production area and identical grade, with clear labeling indicating origin, grade, weight, and date. Storage and transportation conditions must prevent moisture, mold, pests, and contamination from odorous or toxic materials.
Testing methods
Quality inspection is primarily conducted via sensory evaluation, where trained inspectors assess the visual and tactile characteristics of the leaves against physical standard samples. Moisture content is determined using either a sensory method or a precise oven-drying method (referencing GB 8170 for numerical rounding). Sand and dust content are measured through a combination of sensory brushing and a weight-based method using a specific separation sieve. Additionally, a combustion test is employed to determine the fire-holding capacity and calculate the extinguishing rate of the leaves.
FAQs
What products are regulated under GB 2635-1992?
The standard applies to bundled flue-cured tobacco leaves that have been initially cured or redried but have not undergone fermentation. It serves as the basis for grading, purchasing, and handover, with export supply based on physical samples.
Are there any updates from the previous version of GB 2635?
Yes, the standard has been updated via two modification notices. Notably, Modification No. 2 expanded the grading system from 40 to 42 grades by adding two new middle-section grades (C4L and C4F), and adjusted several quality factors like leaf structure and body for specific upper leaf grades.
How does GB 2635-1992 differ from ISO standards?
GB 2635-1992 is a highly specific national standard tailored for the Chinese tobacco industry's domestic purchasing and grading framework. It utilizes a unique 42-grade classification system based on stalk positions and colors, which differs structurally from general international ISO standards for tobacco.
The summary above provides a high-level overview of GB 2635-1992. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 2635-1992 today to access all detailed parameters, grading tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- B35
- ICS
- 65.160
- Competent department
- State Tobacco Monopoly Administration
- Technical committee
- National Technical Committee on Tobacco of Standardization Administration of China
Relationships
Replaces:GB 2636-1986, GB 2635-1986