20 April 2026 | Corporate News
Haliç Occupational Hygiene Laboratory has completed its formal application to the Turkish Accreditation Agency (TÜRKAK) for accreditation under the TS EN ISO/IEC 17025:2017 standard in occupational hygiene measurement, testing, and analysis activities. The application scope consisting of 50 parameters—comprising 38 chemical and 12 physical factors—covers the entirety of measurement fields served by our laboratory.
Toward International Quality Standards
Operating under Haliç OHS and Environmental Consulting Services, our laboratory has officially submitted its TÜRKAK (Turkish Accreditation Agency) accreditation application in order to conduct occupational hygiene measurement, testing, and analysis activities at an internationally recognized level of competence.
Our application was made within the scope of TS EN ISO/IEC 17025:2017 — General Requirements for the Competence of Testing and Calibration Laboratories, the international standard defining the competence of testing and calibration laboratories. The standard comprehensively assesses the laboratory’s technical competence under headings of impartiality and confidentiality, personnel competence, measurement traceability of instruments, method validation, calculation of measurement uncertainty, and reporting of results.
Our Application Scope: 50 Parameters
Our accreditation application encompasses a broad spectrum of parameters covering chemical and physical factors exposed in the working environment:
Chemical Factors, 38 Parameters
- Heavy metals; 26 and 27 elements via ICP-OES using two separate sample preparation techniques (acid digestion in microwave and hot block); additionally mercury (Hg) via cold vapor AAS
- Volatile organic compounds (VOC); 55 components via active carbon tube sampling and gas chromatography
- Dusts; gravimetric dust in total, thoracic, and respirable fractions; respirable crystalline silica (quartz and cristobalite); carbon black; rubber process dust and rubber fume; alkaline dusts (NaOH, KOH, LiOH); suspended particulate matter measurement by optical method (photometer)
- Gases and vapors; formaldehyde, ammonia, hydrogen cyanide, nitrogen oxides (NO/NO₂), sulfur dioxide, bromine and chlorine, ozone, hydrogen peroxide
- Acids; fluoride and hydrofluoric acid by ion chromatography; hydrogen chloride, hydrogen bromide, and nitric acid; sulfuric acid and phosphoric acid
- Hexavalent chromium (Cr(VI)), metalworking fluids (MWF), and oil mist originating from mineral oil-based fluids
- Instantaneous measurements with portable gas detector; oxygen, carbon monoxide, carbon dioxide, sulfur dioxide, nitrogen dioxide, hydrogen sulfide, methane, and lower explosive limit of flammable gases (%LEL)
- Detector tube (colorimetric comparison) method; 129 gas and vapor parameters
Physical Factors, 12 Parameters
- Noise; personal noise exposure (TS EN ISO 9612), miniature microphone in real ear (MIRE) technique for sound sources close to the ear, and workplace ambient noise measurements
- Vibration; hand-arm vibration and whole-body vibration exposure
- Thermal comfort; determination of PMV and PPD indices, heat stress in hot environments (WBGT), and required clothing insulation (IREQ) evaluation in cold environments
- Lighting; measurement of workplace lighting levels
- Electromagnetic Field; electric and magnetic field exposure measurements in the 0 Hz – 1 MHz range
In multi-component parameters such as heavy metals, volatile organic compounds, and detector tubes, each individual substance is reported separately, and the total number of substances within our scope is well above the 50-row parameter list.