Reply by Sylvain

0. Have a pile of dust.
1. clean the filter
2. weigth your empty bucket;
3. start your system, wait something like 30” to have a stable regime;
4. collect dust during a well specified time (the longer the best).
5. stop the system.
6. weigth the bucket with dust. Substract the empty weigth; note the result.
The higher the weigth of the dust in comparison to the weight of the empty bucket, the more it is precise. Use a scale sensitve enough. Don’t use a scale with a 250 Lb range to weigth 2Lb.
7. emty the bucket on the dust pile
- repeat from 1. X times and determine the average value.

change the filter model and repeat the procedure to determine the average value with the new filter model.

-- Sylvain, Brussels, Belgium, Europe - The more I learn, the more there is to learn