Angle of Repose Calculator
The angle of repose is important in understanding how well a powder will flow through your machine. LFA has developed this Angle Of Repose Calculator to help you quickly and easily calculate any angle of repose.
Simply enter the height of your pile of powder in cm in the section below labelled "H" and the diameter of the base of your pile of powder in the section labelled "D". The calculator will then calculate the angle of repose in degrees for you.
Here is a video on how best to take the measurements:
Please enter the height and diameter below:
Now that you have the result you can compare it to the following table to determine its relative ability to be able to flow.
|Angle Of Repose (degrees)||Expected Flow|
|36-40||Fair - aid not needed|
|41-45||Passable - may hang up|
|46-55||Poor - must agitate or vibrate|
|>66||Very, Very Poor|
If your powder has an angle of repose that is higher than 45° then it is likely that it will not be suitable for tablet pressing. If this is the case then we strongly recommend that you add a flowing agent to it.