Tanzania Coffee Board grades (British nomenclature)
Tanzania grades arabica on the same British-derived letter system as Kenya, with the Tanzania Coffee Board running the Moshi auction and direct-export licences. Both the EAS 130 regional standard and importer charts describe AA as the top size with AB the main commercial grade and PB separated by shape; robusta from Kagera is graded separately.
- Grades
- 8
- Defect sample
- not published
- Screen sizes
- 2listed
- Origins using it
- 1
The grades
In this atlas's own words| Grade | What it requires |
|---|---|
| AA | Largest flat beans, screen 18 (importers quote 17-18). |
| A | Large flat beans just below AA. |
| B | Medium flat beans. |
| AB | Combined A and B, screen 15-17 in importer tables. |
| PB | Peaberry. |
| C | Small flat beans. |
| E | Elephant beans. |
| F, AF, TT, UG, TEX | Lower fractions: lights, brokens, undergrades and 'TEX' sorted by density and size. |
How it is measured
Screen sizes
- 18 (AA)
- 15-17 (AB)
Defects
Shares the EAS 130 East African framework: size grading on round screens, peaberry on slotted screens, moisture 10.5% maximum, cup classes assigned by liquorers.
Altitude terms
None used.
Other grading systems
- Central American and Mexican altitude grades
- Classificação Oficial Brasileira (COB) / New York method
- Coffee Board of India grades
- Colombian export preparations
- Ethiopian grades 1-9
- Hawaii Administrative Rules Chapter 4-143 green coffee grades
- Kenya size and density grades
- Other national grade vocabularies
- Peru altitude grades and NTP 209.027
- Rwanda and Burundi screen grades
- SCA (formerly SCAA) green coffee classification, as publicly restated
- SNI 01-2907-2008 defect-value grades
- TCVN 4193 green coffee grades