After hulling, the green coffee
is graded using hand-held screens. The dried coffee beans are passed
through sieves that sort beans by size.
The measured "screen sizes", of the width of the coffee
beans, are in sixty-fourths of an inch. Importers are looking for
coffee beans of a consistent size as this promotes even roasting.
For the cooperatives known to have ‘gourmet’ or larger
sized coffee, such as KAPB, KAPBM, KPKP and KOPVOCH, the beans are
graded with a screen
size of 17 first, and then a 16. If there is much coffee left,
it is graded again with a screen sized 15.
For the other coops, COSAHEC, CAFUMO, KKKLD and CACGAVA, the coffee
is graded with a screen sized 16 and then 15.
If there is a significant amount of coffee left, it is graded again
with a screen sized 14. RECOCARNO requires that All Bean coffee
contain 75% of screen 17 and over and 25% of screen 15-16.
The next stage of processing is hand-picking,
or final sorting, of the hulled and graded "green coffee".
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