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Frequently Asked Questions


What is Traceable?
In the context of measurement science, traceability is the property of a measurement result in which the result can be related to a national measurement reference through a documented unbroken chain of calibrations. National measurement standards are maintained by national measurement institutions (NMIs) such as the National Institute of Standards and Technology (NIST) in the United States. The ISO/IEC 17025 accredited calibration certificate that comes standard with our Traceable®products is recognized in all European countries. With every Control Company Traceable® Product, you receive the product, detailed operating instructions, individual serial number, Traceable® calibration label, and a Traceable® Certificate. The certificate displays detailed information for your specific serially-numbered product, indicating its traceability to NIST. The Traceable® calibration label provides the original calibration date and the calibration due date; it is a constant reminder of the next required re-certification date.

Who requires it?

  • Everyone who is, or wants to be ISO-certified
  • Military suppliers
  • Government labs, from FDA to USDA
  • Labs maintaining certification programs
  • Labs requiring the utmost in accuracy
  • Hospital and clinical labs fulfilling CLIA requirements
  • Labs desiring to use the best possible practices for all measurements

What are ISO/IEC 17025 traceability requirements?
ISO/IEC 17025:2005 mandates traceability in clause 5.6.1, which states in part:

“All equipment used for tests and/or calibration, including equipment for subsidiary measurements (e.g. for environmental conditions) having a significant effect on the accuracy or validity of the result of the test, calibration or sampling shall be calibrated before being put into service. The laboratory shall have an established programme and procedure for the calibration of its equipment.”

How does Control Company verify traceability?
We use one of several methods to assure traceability. We acquire Certified Reference Materials (CRMs) directly from national measurement institutions and use them as direct comparative standards. We use accredited independent calibration laboratory services which provide traceability to NIST. We rigorously adhere to industry standard methods, practices, procedures, and definitions (e.g., ASTM Methods).

How does Control Company help you?
Control Company provides the help to meet traceability requirements by supplying you with standards and instruments traceable to NIST. The Traceable® equipment is invaluable in assuring that your lab results are accurate. We created the Traceable® Certificate. It is an internationally recognized and standardized method for describing measurement procedures and product accuracy.

Control Company's ISO 9001 QMS Certification provides you the assurance that an independent auditor has checked our methods, our procedures, our testing, our technique, and our record-keeping. Control Company's ISO 9001 Certificate Number is 01805-2006-AQ-HOU-RvA from DNV GL. Many United States government and military laboratories, as well as hospitals, clinics, universities, and industrial companies require ISO 9001 certification for their calibration equipment and suppliers. Control Company's ISO certification provides that extra measure of confidence today's labs demand.

FAQ Calibration Service 

What is the Calibration Service?
For those customers who need to show continued compliance with a quality system, Control Company provides a re-certification service to recalibrate all Traceable® products. Most users re-certify their equipment on an annual basis. Some with special requirements do it more frequently.

Simply send it to Control Company. No return authorization number is required. Upon receipt, Control Company will fax re-certification costs and await instructions.

Download Calibration Service form here

What is "As Found" data and "As Left" data?
When recalibrating your measurement device, you have the option to receive “As Found” data, “As Left” data, or both. 

As Found calibration data is calibration data acquired prior to any repairs or adjustments being made to the device.  In other words, it is the condition of the device “as found” when arriving to our facility for calibration. This provides the user an opportunity to ensure that the instrument was reading accurately, and within specification, while it was in use. It offers valuable information and documentation to support an end user's test results. It also provides record-keeping on the instrument's long-term linearity and stability

As Left calibration data is calibration data acquired after any repairs or adjustments are made to the device, i.e. the condition the device was left before shipping back to you.  The condition of the device used to acquire the as left data will be the same condition in which you will receive your device.

If I replace the battery on my instrument, will it need re-calibration?
None of the Traceable® products will need re-calibration or re-certification due to a battery change

What does it cost of re-calibration? 
Each device will be estimated according to as found or as left data.
Returned shipping cost is $19 per device 

Please include a working batter and probe in packaged being shipped to Control Company

*cost may vary upon product condition, cal points, and  any additional customizations 


Product Support 

What is MIN/MAX and can I set it? 
These are measurement readings recorded to represent the minimum(lowest or min) value achieved and the maximum(highest or max) value achieved since the instrument's. If the memory is cleared it will display the most recent reading. These are temperature values that cannot programmable. 

What are Hi/Lo Alarms and how do I set it?

If your instrument comes with this feature, you will have the ability to set the alarm values. The instrument will alarm when readings are above or below the set values. Setting the values will be dependent on the product. See the manual on each product page or contact us at 281.482.1714 or email 

What is IN/OUT?
The IN is the ambient temperature around the thermometer's environment and the OUT is the measurement of the bottle probe. This does not reflect if teh instrument is in or out of it's environment.  

What does accuracy mean?
Accuracy is the paremter which characterizes a measurement insturment's ability to measure with the range of the theoretical true value of the measured quantity. 

What does resolution mean?
The instrument will display beyond a whole number. These are are referenced as significant digits. 

What the bottle /vaccine probes filled with? 
Bottle probes are willed with  non-toxic glycol solution, which GRAS (generally recognizes as safe) by the US FDA. 


Why is my product screen is blank, faint,or giving erratic readings?
Check the battery, it may need replacing. If you are still receiving errors after battery replacement,remove the batteries. Press all the buttons-one at a time. Put the batteries back in.  iIf issues still occur, please contact customer service at 281.482.1714 or  

Why does my product screen display LLLL? 
If the tempature of your environment is within the thermometers' or hyrogrometers' measuring range, this error will occur if the probe is disconnected or damaged. 

Why does my product screeen display HHHH?
If the tempature of your environment is within the thermometers' or hyrogrometers' measuring above the range, this error will occur if the probe is disconnected or damaged. 

Why are my two instruments displaying different tempatures? 
When comparing two thermometers, you must add the tolerances of the two units together to identify the total amount of variance that may occur between the two units and still be considered within specification. For example, when comparing two devices of the same model that have a +/- 1˚C accuracy, the two units can display temperatures that are up to 2˚C different. When comparing temperatures of different model thermometers it is important that the probe types of both devices are equivalent