Road Construction Laboratory at “Road Company” EAD

Road Construction Laboratory at “Road Company” EAD is the successor or Road Testing laboratory at “Patstroy-92” AD. The initial accreditation of the laboratory dates back from the year 2003. Since February 2013 the laboratory has been a part from at Road Company EAD. The laboratory is accredited by the Executive Agency “Bulgarian Accreditation Service” according to the requirements of EN ISO/IEC 17025:2018 and its Certificate for Accreditation is with reg. № 29 ЛИ.

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Laboratory complex at "NJN" Ltd.

is a conformity assessment body that performs laboratory activities on sampling and testing in the field of construction. The initial accreditation of the laboratory is from 2020. The laboratory has accreditation certificate Reg. №7 ЛИ, issued by Executive Agency “Bulgarian Accreditation Service”.

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Construction testing laboratory at Grona Hold Ltd.

The construction laboratory is equipped with state-of-the-art instruments and equipment and is staffed by highly qualified specialists, ensuring the high-quality performance of all types of testing and sampling of aggregates, asphalt mixtures, construction soils, and related materials. The laboratory operates three offices. It is accredited by the Bulgarian Accreditation Service (EA BAS) in accordance with БДС EN ISO/IEC 17025:2018 and holds Accreditation Certificate No. 290 ЛИ.

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“Research and Construction Institute – NISI” Ltd.

Within NISI Ltd., two accredited testing laboratories for construction materials operate, accredited by the Bulgarian Accreditation Service (EA BAS) in accordance with БДС EN ISO/IEC 17025:2018. The Construction Testing Center (CTC), holding Accreditation Certificate No. 88 ЛИ, performs testing across a wide range of construction fields, including concrete, mortars, aggregates, asphalt mixtures, insulation products, structural elements, finishing products, and others. The Testing Laboratory for Construction Materials (TLCM), holding Accreditation Certificate No. 47 ЛИ, performs physico-mechanical and chemical testing of basic construction materials and products.

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Department Testing at Service Lab Ltd

Department Testing at Service Lab Ltd is a conformity assessment body which performs the laboratory activities testing and sampling in the construction area. The initial accreditation of the laboratory is from 2022. The laboratory has a Certificate of Accreditation Reg. № 296 ЛИ, issued by Executive Agency “Bulgarian Accreditation Service”. More about the laboratory and its scope you will find on their website below.

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Construction Testing Centre at TPA EOOD

ТРА International is represented in Bulgaria by TPA EOOD, which has three testing laboratories as it follows: Construction Testing Centres in Sofia, Burgas and Krepost Village, municipality of Dimitrovgrad. Since august 2003 Construction Testing Centre at TPA EOOD has been a successor of Central Construction Laboratory at “Injstroy” AD, Sofia. Construction Testing Centre at TPA EOOD is accredited by the Executive Agency “Bulgarian Accreditation Service” according to the requirements of EN ISO/IEC 17025:2018 and its Certificate for Accreditation is with reg. № 147 ЛИ.

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Technický skúšobný ústav Piešťany, a.s. (Slovakia)

Technický skúšobný ústav Piešťany, a.s. is Slovakia’s oldest testing laboratory, operating since 1949. With decades of experience, the organization provides trusted services in testing, certification, inspection, and metrology. Its calibration laboratory verifies and calibrates measuring instruments in areas such as acoustics, force, length, pressure, mass (weight), and temperature. The calibration laboratory is accredited by the Slovak National Accreditation Service (SNAS) in accordance with ISO/IEC 17025:2017 and holds Accreditation Certificate No. K-021.

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General Directorate "National Center of Metrology "

at the Bulgarian Institute of Metrology (BIM) represents the Republic of Bulgaria and participates in working groups and projects of the following international metrology organizations: CIPM, EURAMET, EURACHEM, COOMET. National Center of Metrology carries out the activities to fulfill the requirements of CIPM-MRA (Mutual Recognition Arrangement), including activities for recognition of calibration and measurement capabilities (CMS) and their publication in the database (KCDB) of BIPM. It is accredited by Executive Agency “Bulgarian Accreditation Service” according to the requirements of ISO/IEC 17025. The accreditation certificate is Reg. №9 ЛК.

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Laboratory Metrologia at "Metrologia Holding" OOD

The Metrology Calibration Laboratory of “Metrology Holding” Ltd. has been carrying out its activities for more than 20 years, not only in Bulgaria but also internationally. The laboratory operates two offices, one located in Sofia, Bulgaria, and another in Bratislava, Slovakia.

Metrology Laboratory is accredited by SNAS (Slovak National Accreditation Service) in accordance with the requirements of ISO/IEC 17025:2017 and holds Accreditation Certificate No. K-098.

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INTERLAB Laboratory Complex at “METROLAB” Ltd.

The INTERLAB Laboratory Complex at “METROLAB” Ltd. is a calibration laboratory, accredited by the Bulgarian Accreditation Service (EA BAS) with Accreditation Certificate No. 3 ЛК (initial accreditation dated 03 July 2003). The laboratory performs calibration of measuring instruments in the fields of mass, temperature, relative humidity, and physico-chemical quantities, including non-automatic weighing instruments, thermometers, relative humidity measuring instruments, pH meters, conductometers, calorimeters, and spectrophotometers.

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Calabsi laboratory is one of the first private calibration laboratories in Bulgaria. The laboratory has high-precision standards and measuring devices, manufactured by leading companies in the industry. Calabsi Laboratory at "Calabsi" OOD is accredited by Executive Agency “Bulgarian Accreditation Service” according to the requirements of ISO/IEC 17025 and the certificate of accreditation is Reg. №10 ЛК.

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