Target and tolerances
|Verbal notation||Physical dimension (1)||Target||Tolerance|
|Mean particle size||d50 (in mm)||3.25 mm||+/- 0.25 mm|
|Fine particles||< 1 mm||0%||0.25%|
|Course particles||> 5 mm||0%||1.00%|
|Main range||2,5 – 4,00 mm||90%||+/+ 5%|
|Granulometrics spread index (2)||GSI : ((d84-d16) x 100) / (2 x d50)||<18|
(1) It is assume that the sieve analysis occurs according to CEN, European standard EN 1235/AI
EFBA recommends to use these 7 sieves (5, 4, 3.55,3.15, 2.80, 2.50 and 1 mm)
(2) Former notation as “average size ranger variation”.
This space is strictly reserved to the members of EFBA. You will find hereafter the minutes of the general assembly, the figures per year of each member country as well as useful documents in favor of a good development of the fertiliser market.
You find an interest in EFBA activities ans missions?
You need to know more about us?
Please fulfill the form beside, we will get in touch with you very soon.