Research of Traceability of Unit of Length in Metrology System of Bosnia and Herzegovina

The actual status of metrology infrastructure of B&H on the state level and possibilities for improvement in future was discussed in this paper. The Institute of Metrology of Bosnia and Herzegovina (IMBiH) is a Government authority on the state level performing the functions of conformity assessment. Institute also has a role in harmonization of B&H legislation with the EC Directives. Since 2009. IMBiH has been full member of the European Association of National Metrology Institutes (EURAMET). Basic adopted laws in force on metrology in B&H are Law of metrology as well as Law on Measurement Units. The metrology system in B&H is highly decentralized, with a lack of correspondence between different levels of authorities. Accredited laboratories and other laboratories occupied with length measurement make their own traceability chain using laboratories in region and without inclusion of IMBiH. Laboratory for length in IMBiH is responsible for the realization and maintenance of the National Standard for Length and transferring unit of the length to lower rank standards and calibration of measuring instruments. Unit of length, in the Laboratory for length is realized through Iodine stabilized He-Ne laser of wavelength 633 nm. The laser is realized according to the definition of meter, i.e. according to the requirements of the International Recommendation for Practical Realization of the meter (CIMP 1997/2001 ‘Mise en pratique’). This laser can be used for calibration of other lasers with wavelength of 633 nm including laser interferometers for length measurements.