Calibration Services

Accredited calibration for laboratory, electrical, industrial and biomedical instruments, performed by ISO/IEC 17025 partner laboratories accredited by SAAC and IAS. Every instrument comes back with a traceable certificate that auditors, regulators and clients accept.

Accredited Partner Laboratories
ISO/IEC 17025:2017 Competence of calibration laboratories
SAAC & IAS Accredited Saudi Accreditation Center · International Accreditation Service
Traceable Results To national standards and SI units, at 95% confidence

A Measurement Is Only as Reliable as the Instrument Behind It

Instruments drift. A balance, pressure gauge, gas detector or patient monitor that is out of calibration can pass a bad batch, reject a good one, miss a hazard or put a safety limit in the wrong place. Usually nobody notices until an audit or an incident.

EnvironmSafe provides calibration through external partner laboratories accredited to ISO/IEC 17025:2017. Our principal partner is accredited by the Saudi Accreditation Center (SAAC) and the International Accreditation Service (IAS). A second partner laboratory, accredited by EA-JAS, adds biomedical, volumetric, analytical and gas-detection equipment. We are your single point of contact. We review your equipment, plan the schedule, coordinate the work and deliver the certificates. Each calibration is performed by the accredited laboratory, within its scope.

ISO/IEC 17025 Accredited Partner Laboratories
Certificates with Results & Measurement Uncertainty
Calibration Label & Due Date on Every Instrument
Calibration Schedule Planning

Calibration Service Areas

More than a hundred instrument types across twelve disciplines, for industrial, oil & gas, power, construction, laboratory and healthcare facilities. Each request is confirmed against the partner laboratory's accredited scope before we quote.

Electrical Test & Measurement Instruments

Handheld and bench instruments used by electrical, maintenance and instrumentation teams, from all major makes.

  • Digital multimeters, handheld & bench, up to 1000 V AC/DC
  • Clamp meters, up to 2000 A
  • Insulation resistance testers, up to 5 kV and 100 GΩ
  • Earth resistance & low-resistance (micro-ohm) meters
  • Electrical safety analysers & PAT testers
  • Oscilloscopes up to 1 GHz, frequency counters, timers & stopwatches

Electrical Calibrators & Reference Sources

The reference instruments your own technicians use to test and calibrate other equipment.

  • Multifunction, loop & process calibrators
  • DC & AC voltage and current sources, up to 1020 V and 20 A (1000 A with a current coil)
  • Thermocouple & RTD simulators, temperature indicators & controllers
  • Decade resistance boxes, resistance & capacitance standards
  • DC & AC power sources and meters

Power, Energy & High-Voltage Instruments

Instruments used to test, commission and monitor power systems, substations and transformers.

  • Energy meters
  • Power & power-quality analysers, including harmonics
  • High-voltage meters & probes, up to 100 kV AC/DC
  • Tan delta test sets & SF6 test equipment
  • Welding machines
  • Fibre-optic power meters, light sources & OTDRs

Pressure & Vacuum

Pressure instruments used in process control, testing and safety systems, from vacuum to high-pressure hydraulics.

  • Pressure gauges, up to 1400 bar hydraulic
  • Pressure transducers, transmitters, switches & chart recorders, including units removed from installed service
  • Vacuum, absolute & differential pressure instruments (incl. Magnehelic)
  • Digital pressure calibrators, indicators & modules
  • Hydraulic & pneumatic test pumps

Temperature & Humidity Instruments

Temperature and humidity measurement wherever product quality, storage conditions or process safety depend on it.

  • Thermometers & temperature gauges, −100 °C to 700 °C
  • Thermocouple & RTD probes, transmitters & controllers
  • Temperature calibrators: dry-wells & liquid baths
  • Infrared thermometers, pyrometers & thermal imagers
  • Thermo-hygrometers, humidity probes & data loggers

Flow & Air Velocity

Portable and removable flow instruments for process, HVAC and testing work.

  • Flow switches, rotameters & liquid flowmeters
  • Portable ultrasonic flowmeters
  • Air & gas flowmeters
  • Vane & thermal anemometers, up to 20 m/s
  • Balometers (flow hoods)

Mass & Weighing

Laboratory and bench weighing instruments, and the reference masses used to check them.

  • Analytical, precision & semi-micro balances
  • Electronic bench balances, up to 50 kg
  • Test weights, OIML classes E1 to M3

Dimensional & Surveying

Measuring tools and reference standards used in inspection, quality control and site surveying.

  • Calipers, micrometers, height, bore & dial gauges
  • Gauge blocks, feeler gauges, LVDTs & length standards
  • Coating thickness gauges, ferrous & non-ferrous
  • Measuring tapes & rules, inclinometers & protractors
  • Test sieves
  • Theodolites, total stations & auto levels

Force, Torque & Mechanical

Hand tools and portable test equipment for workshops, construction and materials testing.

  • Torque wrenches, up to 3000 N·m
  • Torque testers & transducers
  • Force gauges & load cells
  • Photo & contact tachometers
  • Shore A / D hardness testers & MPI electromagnetic yokes

Gas Detection & HSE Instruments

The instruments safety teams rely on to detect hazards and measure exposure in the workplace.

  • Gas detectors: O₂, CO, CH₄, H₂S, Cl₂, NH₃ & NO₂
  • Gas analysers
  • Sound level meters
  • Vibration meters
  • Light (lux) meters

Laboratory & Analytical

Volumetric and analytical instruments that laboratory results depend on, so your data stands up in audits and accreditation reviews.

  • Micropipettes
  • Volumetric glassware: pipettes, burettes, flasks & dispensers
  • pH, conductivity & TDS meters
  • Colorimeters & turbidity meters
  • Refractometers & viscometers

Biomedical Equipment

Performance verification of portable medical devices for hospitals, clinics and laboratories.

  • Defibrillators: energy output & charge time
  • Patient monitors, ECG machines & vital-sign simulators
  • NIBP monitors & blood-pressure equipment
  • Pulse oximeters
  • Medical gas-flow analysers

We calibrate all major makes, including Fluke, Megger, Druck, Hioki, Kyoritsu and Testo. Instrument not listed? Send us the make, model and measuring range, and we will confirm whether it falls within the accredited scope before any work is agreed.

On-Site Calibration of Large & Installed Equipment

Some equipment is too large, too heavy or too permanently installed to send to a laboratory, and has to be calibrated where it stands. We are preparing to offer on-site calibration for it. If you need any of the following, tell us now and we will contact you as soon as it is available.

  • Temperature mapping and calibration of ovens, incubators, water baths, refrigerators, freezers and cold rooms
  • Furnaces, climatic and humidity chambers, autoclaves and infant radiant warmers
  • Batching plants, platform and industrial weighing scales, and test weights above 200 kg
  • Tensile and compression testing machines, jacks, cranes and load-testing equipment
  • Coordinate and vision measuring machines, and floor-standing centrifuges
  • On-site loop calibration of installed process and level instruments, and large in-line flowmeters
  • Large high-voltage test sets and dividers

Register Your Interest

From Equipment List to Certificate

One point of contact, a clear plan and no surprises.

01

Equipment Review

Send us your instrument list with the make, model and range of each instrument. We check every item against the partner laboratory's accredited scope and agree the calibration points and interval you need.

02

Plan & Quote

We confirm the scope and price, coordinate transport of your instruments to and from the partner laboratory, and schedule the work around your operations.

03

Accredited Calibration

The laboratory calibrates each instrument against reference standards traceable to national standards and SI units. If an instrument is faulty or badly out of tolerance, you hear about it before anything else is done.

04

Certificates & Labels

Each instrument comes back labelled, with a certificate and detailed results, ready for your quality system, auditors and regulators.

Calibration — Common Questions

Who performs the calibration?

External partner laboratories accredited to ISO/IEC 17025:2017. Our principal partner is accredited by the Saudi Accreditation Center (SAAC) and the International Accreditation Service (IAS). A second partner laboratory, accredited by EA-JAS, covers additional biomedical, volumetric, analytical and gas-detection equipment. EnvironmSafe manages the service from start to finish and remains your point of contact.

Is every calibration point accredited?

Most of the range above is within the laboratories' accredited scope. Where an instrument or measurement point is not, we tell you before we quote, and the certificate marks it clearly as not accredited. You always know exactly what you are getting.

What does the calibration certificate include?

The instrument's identification, the reference standards used and their traceability, the measured results, the measurement uncertainty (k = 2, about 95% confidence), the calibration and due dates, and the environmental conditions at calibration. On request, it also states whether the instrument conforms to the manufacturer's specification.

Is calibration done on site or in the laboratory?

In the laboratory. Instruments are sent to the accredited partner laboratory and returned with their certificates, and we coordinate the transport. On-site calibration of large and installed equipment is coming soon; see the list above to register your interest.

How often should instruments be calibrated?

The default interval on the certificate and label is one year, unless you specify a different one. The right interval depends on the manufacturer's recommendation, how heavily and where the instrument is used, how critical its readings are, and what your quality system requires. We can help you set it for each instrument.

What happens if an instrument fails calibration?

If an instrument is found faulty or well outside tolerance, the laboratory notifies us and we contact you before any further work. Calibration does not include repair; we will advise you on the options.

Is this the same as PSV testing?

No. Pressure safety valves are set-pressure tested and certified on our own test bench as a separate service. See PSV Testing & Calibration. This service covers measuring and test instruments: the gauges, meters, sensors and analysers your readings come from.

Instruments Due for Calibration?

Send us your equipment list with the make, model and range of each instrument. We will confirm the scope, schedule and price.

Request a Calibration Quote