This part of ISO 1135 specifies requirements for types of blood­ taking sets for medical use in order to ensure functional inter­ changeability of transfusion equipment. The materials and the components of the sets are validated by various test methods (type tests) and, in addition, tests are per­ formed for the release of lots of finished sets (lot tests). The manufacturer shall select appropriate test methods to com­ ply with the requirements laid down in this part of ISO 1135. Secondary aims of this part of ISO 1135 ar e to provide a) specifications relating to the quality and performance of materials used in transfusion equipment ; b) a unified presentation of terms and designations for such equipment. In some countries, the national pharmacopoeia or other na­ tional regulations are legally binding and take precedence over this part of ISO 1135. This part of ISO 1135 specifies requirements applicable to sterilized blood-taking sets intended for single use and for a single donor only. single donor onl