Ceylon black tea from Sri Lanka follows the official grading system, from the large, wirely leaves, to small broken pieces. Tea leaves actually follow the same production process and grading takes place at the very end.
Most popular grade are:
OP – Orange Pekoe
PE – Pekoe
BOP – Broken Orange Pekoe
FBOP = Flowery Broken Orange Pekoe
The lowest grade, with the smallest particles is called Dust, typically used in teabags.
To try these teas, check the website of TEAPLUSUS