C-03

Temperature and humidity

Thermometers, probes, loggers, ovens, incubators and chambers calibrated at the points your process actually runs at.

What it is: Probes, loggers, ovens, incubators, chambers
Who it is for: Cold chain, thermal processing and any temperature CCP
Turnaround: 3–10 working days

WHAT THIS IS

What this is, and why it matters

Temperature calibration compares your instrument against a reference at defined set points and reports the deviation and its uncertainty at each. It covers hand-held thermometers and probes, thermocouples and RTDs, and data loggers; and it covers the equipment that holds a temperature rather than reads one — ovens, incubators, water baths, refrigerators, freezers and environmental chambers. Humidity instruments are handled in the same lane. For enclosures, mapping establishes how temperature varies across the working volume rather than only at the built-in sensor.

Temperature is the most heavily relied-upon measurement in food manufacturing and the most casually verified. Cook steps, chill chains, cold storage, laboratory incubation and the validation of a pasteuriser all rest on a reading being right. The detail that matters is calibrating at the point of use: an instrument correct at ambient can be several degrees out at 4 °C or at 121 °C, and the set point worth testing is the one your process runs at, not the one that is convenient to reach on the bench.

What this lane covers

Thermometers, thermocouples, RTDs, data loggers
Ovens, incubators, baths, chambers, hygrometers

TRIGGERS

When you need it

A temperature is a critical control point

Where HACCP names a temperature as a CCP, the instrument monitoring it has to be calibrated and traceable and the interval has to be justified. This is a standard line of audit questioning, and "we calibrate annually" is not on its own the justification.

Cold chain and cold storage

Chillers, freezers, cold rooms and transport loggers make product safety decisions continuously and unattended. A logger reading two degrees low turns a documented cold chain into a fiction that nobody notices.

Laboratory and process equipment

Incubators, ovens, autoclaves and water baths need calibration and, being enclosures, mapping — a single sensor near the door does not describe the shelf at the back, and it is the shelf at the back that holds the samples.

PROCESS

How it works

Identify the instrument and the range you use
Instrument or enclosure type, and — the important part — the set points your process runs at. Calibration points are chosen around those, and for enclosures the mapping layout is agreed before the visit rather than improvised at it.
Coverage confirmed against the accredited scope
The laboratory confirms whether your instrument and range sit inside the accredited scope before quoting. Where they do not, that is said plainly rather than quietly absorbed — the scope annex is published on this site precisely so the boundary is checkable.
Measured as found, before any adjustment
The as-found reading is recorded first, always. It is the only evidence of whether the measurements you have already taken and acted on were sound, and adjusting the instrument before measuring it destroys that evidence permanently.
Certificate issued against traceable references
The certificate states the deviation and uncertainty at each set point, the reference used and its traceability, and for mapping, the position of each sensor and the variation observed across the volume over the period.

What you get back

A certificate giving the deviation and uncertainty at each set point tested, with the reference standard and its traceability — and for enclosures, the mapping data showing how the working volume actually behaved, position by position.

Scope facts

Parameter	Value	Note
Accreditation basis	ISO/IEC 17025:2017, accredited by the Saudi Accreditation Center.	Publishes from the certificate document.
Accredited ranges and CMC	Calibration: mass, mechanical, temperature and chemical measurements, published line by line with range and CMC. Testing: food and agricultural microbiology, covering aerobic plate count, Escherichia coli, coliforms and Enterobacteriaceae.	Publishes from the scope annex. No range is estimated.
Collection and on-site service	Non-portable instruments are calibrated at your premises. Portable items may be submitted to the laboratory, or collected by our personnel for an additional pickup fee. Standard turnaround is 3 to 10 working days from acceptance.	Confirmed service routes only.

Q+A

Common questions

Temperature and humidity

Can you calibrate at the temperatures I actually use?

Yes — calibration points are chosen to bracket your working range rather than a generic one, and uncertainty is stated per point. Tell the laboratory the range the instrument lives in, and the points are confirmed in writing before work starts.

Do you calibrate the probe or the whole loop, including the display?

The reading you act on comes through the indicator, so calibrating probe and indicator together — as used — tells you what you actually see. If probes and displays are swapped around in service, say so; that changes what the certificate can cover.

Is this accredited work?

Temperature falls within the laboratory’s SAAC-accredited calibration fields under ISO/IEC 17025:2017, certificate N-C-00592. Whether a specific instrument — a humidity sensor, for example — sits inside the accredited scope is confirmed in writing at quotation and stated on the certificate itself.

My logger was fine at calibration but the process data looks wrong — why?

Calibration tells you about the instrument under controlled conditions; it does not correct a probe placed in the wrong part of the room or a sensor reading air instead of product. If the as-found was in tolerance, look at placement and use before blaming the logger.

What happens if the as-found result is out of tolerance?

It is reported exactly as found, before any adjustment, and that number judges every measurement made since the last calibration. You then decide what to review — which is only possible because the as-found was recorded rather than adjusted away.

Send the sample question or the instrument list. It is read by a bench professional, not routed through a ticket queue. Confirmed phone, mailbox and address publish here at launch.

Request calibration Contact

CONTINUE