MT 44 - 'Flow number'
Content Handbook F
Outline of method
The method has not been collaboratively tested, although it has been shown to be useful:
The method (Note 1) is suitable for the determination of flowability (flowing properties) of powders, i.e. mineral carriers, formulated dusts and wettable powders containing pesticides. The method is not suitable for:
(i) seed treatment powders or other powders to which oils have been added to suppress dustiness, or
(ii) powders which do not form homogeneous mixtures with sand.
The products to be tested should pass a 250 ìm test sieve; products of larger particle size are examined for free flow by visual inspection.