Abstract: The invention relates to thermoplastic polycarbonate molding compositions which are rendered resistant to gamma-radiation by incorporating therewith about 0.1 to about 5 percent by weight of a stabilizing agent selected from the group consisting of ##STR1## wherein R is a hydrogen or a halogen atom or a C.sub.1 -C.sub.10 alkyl, a C.sub.6 -C.sub.10 alkyl, a C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.22 acyl, C.sub.6 -C.sub.18 alkylaryl or a C.sub.4 -C.sub.10 cycloalkyl radical, n is an integer of at least 1 and preferably 1 to about 100 and Y and Y.sup.1 independently are a hydrogen atom, a C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.10 alkyl or a C.sub.6 -C.sub.18 alkylaryl or a C.sub.6 -C.sub.18 arylalkyl radical or ##STR2## wherein m is 1 or 3-6, R.sub.1, R.sub.2 and R.sub.3 independently are a hydrogen atom or a C.sub.1 -C.sub.10 alkyl, C.sub.6 -C.sub.10 aryl or a C.sub.6 -C.sub.18 alkylaryl radical.

Abstract: YA molded sheet of the single layer type for packing at least two directly superimposed layers of fluorescent light tubes comprising upwardly directed contours including longitudinally spaced apart tube cradling surfaces for each tube and longitudinally extending narrow tube separating ribs for a plurality of tubes in an upper layer, and downwardly directed contours including a series of flat support surfaces to hold the rest of the sheet elevated thereabove to facilitate drying of the damp sheet during manufacture, the series of support surfaces being dimensioned and arranged to contact the upper part of the same number of tubes in a lower layer and resist lateral shifting of the upper layer of tubes with respect to the lower layer of tubes.