The article “Two Parameters Limiting the Sensitivity of Laboratory Tests of Condoms as Viral Barriers” (J. of Testing and Eval., 1996: 279–286) reported that, in brand A condoms, among 16 tears produced by a puncturing needle, the sample mean tear length was 74.0 m, whereas for the 14 brand B tears, the sample mean length was 61.0 m

(determined using light microscopy and scanning electron