Tea grading is one of the most complicated and misunderstood subjects. It is often misunderstood because of a number factors. Fanning 1(F1)-Forms about 3-4% of the production. This is a mixture of black tea and large amount of smallish cut fibres often sifted out of the primary grades. The teas are quite useful in tea bags due to its quick brewing, strong flavour and good colouring qualities. CTC- (CUT, TEAR & CURL) PRIMARY GRADES 

• Broken Pekoe 1(BP1)-Forms about 12-14% of the total production and has the largest size particles. Liquors are light in colour but have an encouraging flavouring characteristic.
• Pekoe Fanning 1(PF1)-Forms the bulk of the production about 58-60% and made up of black grainy particles slightly smaller than the BP1.
• Pekoe Dust (PD)-Forms 10-12% of the production, often black and finer than the PF1 and has thick liquors and aroma.
• Dust 1(D1)-Forms about 4-6% of the production and is made up of the smallest particles and characterised by strong liquors.

SECONDARY GRADES

• Dust (D)-Made up of tiny bits of broken leaf often used to brew strong tea.
• Broken Mixed Fanning (BMF)-Fibrous lots with very little trace of black teas.

ORTHODOX TEAS

• Pekoe (P)-Is the largest of the leaf grades with thinner liquors as compared to smaller grades. Demanded more for its attractive appearance than for the cup quality.
• Flowery Pekoe (FP)-Is neater and more even than the pekoe, it is curly and free of stalk and flaky leaves, commands a higher price due to its brighter and cleaner liquors.

– See more at: http://fotorealistic.co.ke/2016/09/07/grades-of-tea/#sthash.eaOtQrU9.dpuf