Why do you need to know how many marginal and unacceptable particles there are in the sample, If you don’t know how many particles make up that sample, the results don’t mean anything?
As you said there is a huge range as to the potential number of particles in the sample, that is true!
Unless you have number as how many particles are in the sample it doesn't mean anything.
All you know is that the sample you had has 2 failed particles. Does that mean the stock is no good because it had 2 fails in an indeterminable number?
I wouldn't suggest counting them it’s not practical but a percentage of failures based on weight could be useful.
We don’t know how many particles are in each container but we know the weight fairly accurately.
We may even know the hopper weight for instance but as the amount in the hopper it’s impossible!!!
If there is an acceptable amount of fails based on weight the experiment has more meaning.
