Canada No. 1 Grade Standards
56 In addition to meeting the standards for all grades set out in section 55, field cucumbers graded Canada No. 1 shall
have a good characteristic green colour over at least 85 per cent of the surface area of each cucumber;
(b) be practically straight, not more than very slightly constricted and not more than moderately tapered or pointed;
(c) have a maximum diameter of 70 mm (2 3/4 inches) and a minimum length of 152 mm (6 inches);
(d) where packed in a container, with the exception of one cucumber, not vary by more than 19 mm (3/4 inches) in diameter or 51 mm (2 inches) in length;
(e) be free from scars affecting more than five per cent of the surface area of a cucumber; and
(f) be free from any other damage or defect or combination thereof that materially affects the appearance, edibility or shipping quality of the cucumbers.
Canada No. 2 Grade Standards
57 In addition to meeting the standards for all grades set out in section 55, field cucumbers graded Canada No. 2 shall
(a) have a good characteristic green colour over at least 75 per cent of the surface area of each cucumber;
(b) be not more than moderately curved, not severely constricted, and not extremely tapered or pointed or otherwise misshapen;
(c) have a minimum length of 102 mm (4 inches);
(d) be free from scars affecting more than 10 per cent of the surface area of a cucumber; and
(e) be free from any other damage or defect or combination thereof that seriously affects the appearance, edibility or shipping quality of the cucumbers.
И.т.д.
http://laws-lois.justice.gc.ca/eng/regulations/C.R.C.,_c._285/page-10.html#h-27