BS ISO 18074:2015 pdf free.Textiles – ldentification of some animal fibres by DNA analysis method一Cashmere, wool, yak and their blends. BS ISO 18074 specifies a testing method for DNA analysis of some animal fibres to identify cashmere, wool, yak, and their blends by using extraction, amplification by the polymerase chain reaction (PCR) method and DNA detection processes. This International Standard is applicable to cashmere, yak, and wool and their blends as a qualitative method. 2 Caution Test results for fibre identification by the DNA analysis method can be obtained with a high accuracy for the above-mentioned textile products which were processed at lower dye concentration levels or dyed in light colours. However, when such textile products were processed under severe conditions or high temperatures, the mitochondrial DNA could have been damaged. In such cases, identification can be difficult because amplification of DNA by PCR cannot take place. If textile products were contaminated by using products from another species, such as cashmere grease on wool fibres, this situation may be solved by checking using microscopy techniques. 3 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated…