The
official body for coffee in Burundi (OCIBU) decided recently to re-classify the
different export grades. The following table will be applicable and some
defects and their proportion are clearly shown either for fully washed coffee
and semi washed coffee.
|
Grade |
Screen size) |
Retention |
Defects in % |
Bean fragment % |
Average moisture content in % |
Foreign Matters |
|
FW
NGOMA MILD |
18/64
or 16/64
or 14/64 or10/64 |
of FW AA of
FW A of
FW B of
FW PB |
Below
to 1 |
0 |
11.5 |
0 |
|
FW AA |
Screen 18/64 (7.1 mm) |
18/64
to 95% max. 5% of 18/64 |
Max 5 |
0.15 |
11.5 |
0 |
|
FW A |
Screen 16/64 (6..5 mm) |
16/64
to 80%, max. 20% of 16/64 |
Max 7 |
1 |
11.5 |
0 |
|
FW B |
Screen 14/64 (5.5 mm) |
Moy. 95% of 14/64 |
Max 10 |
1.5 |
11.5 |
0 |
|
FW PB |
Screens
10/64 and 8/64 (4mm oblong and 3 mm oblong slits ) |
Minimum 90% of 10/64 |
Max 7 |
1 |
11.5 |
0 |
|
FW TT |
Rejects
of FW
AA, et FW A |
Moy. 80% comprising between
18/64 and 16/64 |
Max. 35 |
Max 10 |
11.5 |
Parchment, light bean : max. 0.5 |
|
FW T |
Rejects of FW B |
Min.
90% of 14/64 |
Max. 35 |
Max 10 |
11.5 |
Parchment, light bean, :
max. 0.5 |
|
FW STL |
All
homogenized lots of coffee with 11.5% of moisture content but not having the
above quality standards and all
rejects which the percentage of over -fermented beans is over 5% |
|||||
II.Semi washed quality standards
|
Grades |
Screen Size |
Retention in % |
Defects in % |
Bean fragments in % |
Average moisture content in % |
Foreign matters in % |
|
W AB |
18/64
and 16/64 (7.1
mm and 6.5 mm) |
Av.
90%Comprising between 18/64 and 16/64 |
Max. :
10 |
0.5 |
11.5 |
0 |
|
W C |
14/64 (5.5 mm) |
Av.
95% of 14/64 and
max. 5% less of 14/64 |
Max. :
15 |
2.5 |
11.5 |
0 |
|
W PB |
10/64
and 8/64 (4
mm and 3
mm oblong) |
Min.
90% of 10/64 |
Max. : 10 |
1 |
11.5 |
0 |
|
W TT |
Rejects of W AB |
Av.
90%comprising between 18/64 and 16/64 |
Max. : 35 |
Max. : 10 |
11.5 |
max. 0.5% Parchment, light bean, bean … |
|
W T |
Rejects
of W C |
Av. 95% of 14/64 |
Max. : 35 |
Max. : 10 |
11.5 |
max. 0.5% Parche,
light beans, beans |
|
W STL |
All
homogenized lots of coffee with 11.5% of moisture content but not having the
above quality standards and all
rejects which the percentage of over -fermented beans is over 8% |
|||||
Note: Screens size expressed in inch
List of defects accepted in the grades FW AA, FW A, FW B, FW PB
at the
grading stage