30. A Type B (U) package or Type B (M) package to be transported by air shall comply with the requirements specified in Article 21 and the radioactive contentin the following :
(a) Low dispersible radioactive materiashall not be greater than what has been authorized for the package design as specified in the certificate of approval;
(b) Special form radioactive material shall not be greater than 3000 A1 or 100000 A2 , whichever is the lower; and
(c) All other radioactive material shall not be greater than 3000 A2.