A report is presented of comparative pilling tests on 52 woven and knitted fabrics for use in dresses, men's and ladies' suits, trousers, coats, overalls, jumpers, shirts and sheets made from different blends, with polyester/wool and polyester/viscose rayon blends predominating. In the selection of the samples the condition was imposed that wear test results should be available for the particular end-use for this comparison in order to save on expensive wear trial results. Test variations and conditions are stipulated for the vibrating box method as well as for the ICI method. When using the modified Martindale method, testing is carried out according to test specification No. 19-91 established by NMP 521.