POLYCARBONATE STANDARD 50'000 FOR GPC;POLY(BISPHENOL A CARBONATE), MELT INDEX 7;POLYCARBONATE RESIN, SECONDARY STANDARD;POLYCARBONATE STANDARD 6'800, FOR GPC;POLYCARBONATE STANDARD 326, FOR GPC;POLYCARBONATE RESIN, SECONDARY STANDARD, MOLECULAR WEIGHT SERIES;POLYCARBONATE STANDARD 3'860 FOR GPC;POLYCARBONATE STANDARD 30'600, FOR GPC