Loading
Concrete strength, aggregate grading, mix design, and quality testing for durable construction.
Professional soil testing, site investigation, and geotechnical analysis for construction projects.
Condition surveys, defect mapping, and load-path assessment on existing structures.
Ultrasonic, rebound hammer, and chemical composition testing for material integrity.
We provide a fully integrated portfolio of Testing, Investigation, Inspection and Certification services that deliver complete peace of mind across all construction materials and operating systems.
Testing, Investigation, Inspection and Certification — four disciplines, one integrated quality system from site to signed report.
Evaluating how your construction materials meet and exceed quality, safety, sustainability and performance standards per ASTM, BS, BSEN, AASHTO, GSO and ISO.
Soil and structural investigation services validating site conditions, foundation design parameters and existing structure integrity for safe construction.
Validating the specifications, value and safety of your raw materials, products and assets through rigorous on-site and laboratory inspection protocols.
Formally confirming that your materials and test results meet all trusted external and internal standards with detailed, easy-to-understand reports.
Browse 185 accredited laboratory tests by material type — all per ASTM, BS, BSEN, AASHTO, GSO, and ISO standards.
Years Experience
Lab Locations
Intl. Standards
Accredited
Tarmak Laboratories LLC is an independent material testing facility in Ghala and Sohar, ISO 17025 accredited and certified to ISO 9001, 14001, and 45001.
Our state-of-the-art laboratories are staffed by highly qualified experts and equipped with cutting-edge apparatus — delivering reliable findings on schedule for construction companies, engineering firms, and government agencies.
Rooted in the standards that built Tarmak’s reputation — accurate results, ethical practice, and lasting partnerships with clients across Oman’s construction and infrastructure sectors.
Accurate, trustworthy results in every test — with strict adherence to ISO/IEC 17025 and international standards.
Dependable testing with the highest standards of safety, ethics, and professionalism — in the lab and on site.
We work closely with every client to meet unique needs and deliver clear, standards-based reports.
Accredited testing in Ghala and Sohar — aggregate, concrete, soil, asphalt and chemical analysis in action.
State-of-the-art Ghala facility equipped for ISO 17025 accredited materials testing.
Gradation, abrasion and durability tests per ASTM and BS standards.
Compressive strength, mix design and cube testing for durable structures.
Composition and chemical testing for construction materials integrity.
Concrete batch verification and proportioning for project-specific performance requirements.
On-site plate load and in-situ validation for safe foundation design.
Registered with DGSM, JSRS, and under company commercial registration in the Sultanate of Oman.
Live online briefing on accreditation requirements, documentation, and how accredited results support project submissions.
Online (Microsoft Teams)
View event arrow_forward
Upcoming
Tour our accredited facility, meet the team, and see aggregate, concrete, and soil testing in operation.
Ghala Industrial Estate, Muscat
View event arrow_forward
Upcoming
Hybrid seminar on in-situ and laboratory soil testing for foundation design and ground investigation projects.
Sohar Laboratory & Online
View event arrow_forward
Past
Hands-on session covering cube testing, mix design verification and BS/ASTM compliance for site engineers and QC teams.
Ghala Laboratory, Muscat
View event arrow_forward
Past
Industry seminar on aggregate and asphalt testing workflows for highway and infrastructure projects.
Ghala Laboratory, Muscat
View event arrow_forwardContact our team of specialists to find the material testing solutions tailored to your project requirements.