The area of field for AWS 17 is 0.0625 inch or 40mm. Although it's not real clear this actually means 40x40mm. At the high end of the sizes you could theoretically fit 9x9 particles or 81 pieces in each field.
Since 11 fields are required you would prepare 11 sample cards with cut-out of 40x40mm and count the number of marginal particles and unacceptable particles. You could have as many as 2 unacceptable particles (total) from all 11 fields.
