What is the difference between type 2 and 2-5 in the COB green bean classification system?
In the COB (Classificação Oficial Brasileira) system, the difference between Type 2 and Type 2-5 refers to the number of defects allowed in a 300-gram sample of . Type 2 is the highest quality grade with minimal defects, while Type 2-5 represents a or a specific commercial category that allows for a slightly higher defect count.
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The COB (Classificação Oficial Brasileira) system is the standard framework used to evaluate the quality of Brazilian . It is a rigorous method that relies on counting 'defects'—which include things like black beans, sour beans, stones, sticks, or insect-damaged beans—within a standard 300-gram sample. The lower the number of defects, the higher the grade, and consequently, the higher the market value of the coffee.
Type 2 is the pinnacle of the COB classification. It is essentially the 'perfect' grade, allowing for an extremely low number of defects (typically 4 or fewer). This grade is reserved for high-quality specialty lots where the producer has invested heavily in sorting and processing to ensure uniformity. When a buyer sees 'Type 2' on a contract, they are paying for a clean, consistent product that will require minimal additional sorting.
'Type 2-5' is a classification that indicates a broader range of quality. In many commercial contexts, this refers to a lot that falls between the strict Type 2 and the more lenient Type 5. While Type 2 is nearly flawless, Type 5 allows for a significantly higher number of defects (up to 120). A '2-5' designation often suggests that the lot is a of different qualities or that it has not been sorted to the exacting standards of a pure Type 2 lot. It is a common commercial grade that balances quality with affordability.
Understanding these classifications is essential for anyone involved in the coffee trade. The difference between these grades isn't just about the number of beans; it's about the sensory impact. A higher defect count introduces off-flavors—such as medicinal, fermented, or earthy notes—that can ruin the profile of a specialty roast. By using the COB system, exporters and roasters can communicate clearly about the expected quality and price of a shipment.
In practice, if you are a roaster, choosing between Type 2 and Type 2-5 depends on your target market. If you are producing high-end single-origin coffees, the investment in Type 2 is usually worth it to ensure a clean cup. If you are creating a high-volume commercial where price is the primary driver, Type 2-5 offers a reliable, cost-effective option that still meets industry standards for safety and consistency.
- ·https://www.ico.org/Verify source for reference 1 ↗
- ·https://www.ncausa.org/coffee-topics/green-coffeeVerify source for reference 2 ↗