Provides methods of test specific to both narrow and wide elastic fabrics. Applicable to woven warp knotted and weft knitted fabrics. Certain tests can be applicable to stretch fabrics which are obtained by the use of elastomeric bulked yarns or by a process such as slack mercerization. Covers definitions, apparatus, test specimens, conditioning and testing, properties to be tested in accordance with existing British Standards, determination of extension at a specified force, of modules, of tension decay, of residual extension, method for fatiguing, of fatigue set of elastomeric thread breaks, of runback, and ageing specimens.