51.1547—Application of tolerances.
Individual samples shall have not more than double the tolerances specified, except that at least one defective and one off-size potato may be permitted in any sample: Provided, That en route or at destination one-tenth of the samples may contain three times the tolerance permitted for potatoes which are frozen or affected by soft rot or wet breakdown: And provided further, That the averages for the entire lot are within the tolerances specified for the grade.