EN ISO 13079:2011

Foreword
1 Scope
2 Normative references
3 Material
4 Single-use Westergren tubes
5 Re-usable Westergren tubes
6 Support for Westergren tubes
7 Graduation and figuring
8 Marking
9 Labelling
Annex A (normative) - Type test for rigidity of Westergren
        tubes
Annex B (normative) - Type test for contamination and
        interfering substances
Annex C (normative) - Type test for straightness of Westergren
        tubes
Annex D (informative) - Measurement of the erythrocyte
        sedimentation rate by the Westergren reference method
Bibliography

ISO 13079:2011 specifies requirements for single-use and re-usable glass and plastics tubes for measuring the erythrocyte sedimentation rate (ESR) by the Westergren method, and for a support to hold tubes during the performance of the test. These so-called "Westergren tubes" are also sometimes designated as "Westergren pipettes". A procedure for measuring the erythrocyte sedimentation rate by the Westergren method is given in an informative annex.ISO 13079:2011 does not apply to single-use containers for human venous blood specimen collection and their accessories for which other standards apply. It also does not apply for devices where the Westergren method has been used as basis to develop other, similar methods or equipment for the erythrocyte sedimentation rate determination.