LFA VM Lab Mixer User Manual page 16

Fill Volumes
The VM Lab Mixer works on fill volume, rather than maximum weight capacity of the Hopper,
®
because the weight of a powder mix can vary depending on its bulk density.
The maximum fill volume represents only a percentage of the total volume of the Hopper and is
dependent on a combination of the bulk density and volume of the powder product.
Calculating Bulk Density
Tools and Materials Needed
• Raw material formulation
• Measuring apparatus (e.g. 1 liter cylinder)
• Scale
Instructions
Note: Wear latex/rubber gloves (and appropriate food grade attire if applicable) during this
process.
1. Place the measuring apparatus onto the scale.
1.1 Note: Ensure that the scale displays zero.
2. Fill the measuring apparatus with powder to the top.
2.1 Note: Ensure not to tap down or disturb the powder while it is being poured.
3. Record the weight of the powder in mL.
4. Divide the weight of the powder by the volume of the measuring apparatus in mL.
Resources for Calculating Bulk Density
To help with calculating bulk density of a powder, LFA offers two resources on our website.
To watch a video on how to calculate the loose bulk density of a powder, go to
lfatabletpresses.com/videos/calculating-bulk-density-making-a-tablet-pill-mix
To see further information on bulk density and use our bulk density calculator, go to
lfatabletpresses.com/bulk-density-calculator
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