The Testing Laboratory Directorate (TLD) is accredited to perform sampling and testing of concrete and concrete mixtures. The sampling is performed by qualified specialists, in possession of necessary equipment – standard forms for concrete sampling, a needle vibrator for compaction etc. The laboratory’s equipment includes apparatuses for the determination of strength properties and frost resistance of concrete, manufactured by the Italian company Controls. The scope of the apparatuses allows for testing of samples with dimensions of 150/150/150 mm, with strength up to 80 Mpa.