Sample storage period and disposal specified in the “MTA Sampling, Preparation, Storage and Disposal Directive” of the MTA General Directorate are given below:
ARTICLE 19- (1) In the course of paid work for public institutions, organizations, and natural or legal persons;
(a) Samples sent to the Mineral Analysis and Technology Department's laboratories for analysis/test and analysis/test procedures of which are completed and reported are stored/disposed as described below.
1) Analyzed/tested and reported samples are stored for 1 (one) year in the sample warehouse of the relevant laboratory before being destroyed by the relevant unit management.
2) If the judicial process is not completed, samples for which analysis/testing is requested by the court and law enforcement officers to form a basis for the judicial decision are kept for 7 (seven) years the date of the report and destroyed at the end of that period, assuming the judicial process is completed.
3) The meetings between the project owner and the units to which the relevant laboratory is affiliated determine how long and in what quantity the samples used in the pilot-scale experiments, which are the basis for ing the working conditions of an industrial facility, will be stored after the research is reported. The storage of samples within this scope for more than 6 (six) months is subject to a cost, and samples are destroyed after 3 (three) years of storage.
4) After the analysis is completed, the kidney stone samples are destroyed.
(2) Within the scope of General Directorate’s projects;
(a) Samples sent to the laboratories affiliated to the Mineral Analysis and Technology Department for analysis/testing and analysis/testing procedures of which are completed are stored/destroyed as stated below.
1) Samples sent by the unit that took the sample, specifying the storage period, are kept by the analysis/test laboratories for 1 (one) year after the analysis/test is completed and reported. At the end of this period, the samples are sent to the TUVEK together with the identification reports and identification materials, if any specification exists, kept for the period specified by the relevant unit, and are destroyed after being stored for the specified period. A copy of the analysis/test reports related to these samples is kept in the relevant laboratory archives.
2) Water samples taken for chemical analysis/tests are preserved and/or destroyed in accordance with the storage conditions and periods determined by the relevant laboratories.
3) Taken for general geochemistry purposes; rock, stream sediment and soil samples are sent to TUVEK for indefinite storage.
4) Technological research samples are kept in the analysis unit for 1 (one) year after the research is reported. At the end of this period, it is delivered to the TUVEK to be stored.