Method for collecting metal scrap , in particular aluminum scrap, in collecting containers , - in which, at one or more production scrap accrual points of a production plant , first metal scrap of a first material processed in the production plant , the first material having a predetermined first composition, and second metal scrap of a second material processed in the production plant , the second scrap having a predetermined second composition, accrues, - in which a first quantity of the first metal scrap of the first material and a second quantity of the second metal scrap of the second material are fed to a collecting container and collected therein, and - in which a first quantity information ( m 1 ) on a measure of the first quantity of the first metal scrap of the first material and a second quantity information ( m 2 ) of a measure of the second quantity of the second metal scrap of the second material are determined, characterised - in that a collecting container composition information ( {C x } ) on the composition of the total metal scrap collected in the collecting container is calculated as a function of a predetermined first composition information ( {c x,1 }) on the first composition of the first material , a predetermined second composition information ( {c x,2 }) on the second composition of the second material and of the first ( m 1 ) and the second quantity information ( m2 ) and - in that the collecting container composition information ( {C x }) is compared with a predetermined composition specification and the feeding of scrap metal into the collecting container is interrupted as soon as the comparison shows that the composition specification is no longer fulfilled. - in which, at one or more production scrap accrual points of a production plant , first metal scrap of a first material processed in the production plant , the first material having a predetermined first composition, and second metal scrap of a second material processed in the production plant , the second scrap having a predetermined second composition, accrues, - in which a first quantity of the first metal scrap of the first material and a second quantity of the second metal scrap of the second material are fed to a collecting container and collected therein, and - in which a first quantity information ( m 1 ) on a measure of the first quantity of the first metal scrap of the first material and a second quantity information ( m 2 ) of a measure of the second quantity of the second metal scrap of the second material are determined, characterised - in that a collecting container composition information ( {C x } ) on the composition of the total metal scrap collected in the collecting container is calculated as a function of a predetermined first composition information ( {c x,1 }) on the first composition of the first material , a predetermined second composition information ( {c x,2 }) on the second composition of the second material and of the first ( m 1 ) and the second quantity information ( m2 ) and - in that the collecting container composition information ( {C x }) is compared with a predetermined composition specification and the feeding of scrap metal into the collecting container is interrupted as soon as the comparison shows that the composition specification is no longer fulfilled. <EOS>