(2) U.S. Consumer Grade AA (destination) shall consist of eggs which are at least 72percent AA quality. The remaining tolerance of 28 percent shall consist of at least 10 percent Aquality and the remainder shall be B quality, except that within the tolerance for B quality notmore than 1 percent may be B quality due to air cells over 3/8 inch, blood spots (aggregating notmore than 1/8 inch in diameter), or serious yolk defects. Not more than 7 percent (9 percent forJumbo size) Checks are permitted and not more than 1 percent Leakers, Dirties, or Loss (due tomeat or blood spots) in any combination, except that such Loss may not exceed 0.30 percent.Other types of Loss are not permitted.(b) U.S. Grade A.(1) U.S. Consumer Grade A (at origin) shall consist of eggs which are at least 87percent A quality or better. Within the maximum tolerance of 13 percent which may be below Aquality, not more than 1 percent may be B quality due to air cells over 3/8 inch, blood spots(aggregating not more than 1/8 inch in diameter), or serious yolk defects. Not more than 5percent (7 percent for Jumbo size) Checks are permitted and not more than 0.50 percent Leakers,Dirties, or Loss (due to meat or blood spots) in any combination, except that such Loss may notexceed 0.30 percent. Other types of Loss are not permitted.(2) U.S. Consumer Grade A (destination) shall consist of eggs which are at least 82percent A quality or better. Within the maximum tolerance of 18 percent which may be below Aquality, not more than 1 percent may be B quality due to air cells over 3/8 inch, blood spots(aggregating not more than 1/8 inch in diameter), or serious yolk defects. Not more than 7percent (9 percent for Jumbo size) Checks are permitted and not more than 1 percent Leakers,Dirties, or Loss (due to meat or blood spots) in any combination, except that such Loss may notexceed 0.30 percent. Other types of Loss are not permitted.(c) U.S. Grade B.(1) U.S. Consumer Grade B (at origin) shall consist of eggs which are at least 90percent B quality or better, not more than 10 percent may be Checks and not more than 0.50percent Leakers, Dirties, or Loss (due to meat or blood spots) in any combination, except thatsuch Loss may not exceed 0.30 percent. Other types of Loss are not permitted.(2) U.S. Consumer Grade B (destination) shall consist of eggs which are at least 90percent B quality or better, not more than 10 percent may be Checks and not more than 1 percentLeakers, Dirties, or Loss (due to meat or blood spots) in any combination, except that such Lossmay not exceed 0.30 percent. Other types of Loss are not permitted.(d) Additional tolerances:(1) In lots of two or more cases:(i) For Grade AA -- No individual case may exceed 10 percent less AA quality eggsthan the minimum permitted for the lot average.