Metrology is the science of measurement and its application.
KEBS is the custodian of ththe National Reference Standards of Measurement in Kenya which are traceable to the international systems of units (SI). KEBSis the designated National Metrology institute (NMI) in kenya
I often confuse METEOROLOGY and METROLOGY. What is the difference?
Meteorology is the science dealing with the atmosphere and its phenomena, including both weather and climate. Metrology on the other hand is the science of measurements and its applications.
What is the international system of units (SI)?
The international systems of units is the modern form of the metric system that is based on the seven (7) base units: the meter (length; symbol: m), The second (time; symbol: s),the kilogram (mass; symbol: kg), the ampere (electric current; symbol: A), the kelvin (temperature; symbol: K), the mol (amount of substance; symbol: mol), the candela (Luminous intensity; symbol: Cd)
The other units of measurements in the SI are derived from the 7 base units. This includes units for speed, volume etc.
What services are offered by metrology?
Services offered in Metrology include:
a) Realization and maintenance of units of measurements
b) Calibration
c) Training on measurements.
d) Laboratory comparison
e) Research and developments
What is Calibration?
This is the act of checking and/or adjusting the accuracy of a measuring instrument by comparing it with a Standard instrument of higher accuracy which has traceability to the international system of units (SI).
What equipment can be calibrated?
Equipment used in industries, research, educational institutions, aviation,the health sector etc.
• Material testing machines, Hardness testing machines, torques wrenches, load cells, torque meters, Vernier calipers, micrometers, GO and NO GO gauges, dipping tapes, tachometers, stop watches, oscilloscopes, generators, density meter, viscometers and hydrometers etc.
All medical equipment such as Thermometers, baby incubators, blood pressure equipment, X-Ray machines etc.
Why should I have my equipment calibrated?
There are several benefits to having your equipment calibrated. Below are some of the key benefits of calibrating your equipment.
i) Accuracy: Calibration ensures that measuring instruments provide accurate results crucial in ensuring quality and safety of products and services.
ii) Preventative maintenance: Regular calibration identifies and corrects issues before they lead to device failure or inaccurate measurements.
iii) Traceability: Calibration establishes a traceable link to national and international standards boosting confidence in measurement results.
iv) Compliance: Many industries require calibrated instruments to meet regulatory and legislative requirements.
What are the consequences of not having my equipment calibrated?
i) Inaccurate measurements: Equipment may produce misleading results compromising quality and increasing defect rates.
ii) Safety risks: Uncalibrated equipment can lead to unsafe working conditions risking employee safety and potentially leading to accidents and injuries.
iii) Increased cost: Poor calibration can result in higher operational cost due to inefficiencies and potential equipment damages.
iv) Legal and compliance issues: Measurements used as a basis of transactions have legal and regulatory matters attached to them. Performing measurements that are non-compliant with sector specific regulations could lead to fines, legal action and loss of certification.
v) Reputation Damage: Inaccurate measurements could lead to delivery of substandard products which could erode customer confidence.
What metrology laboratories are available at KEBS?
• Density and viscosity laboratory
• Force, torque and hardness laboratory
• Length and industrial measurement laboratory
• Mass and balance calibration laboratory
• Pressure and vacuum laboratory
• Temperature laboratory
• Volume and flow laboratory
• Photometry laboratory
• Acoustics and Vibration laboratory
• Ionizing radiation (Dosimetry) laboratory
• DC and low frequency laboratory
• Time and Frequency laboratory
• Energy and Transformer laboratory
c) Support units
• Instrumentation workshop
• Mechanical workshop
• Liaison Office
Who needs Metrology services in Kenya?
a) Service industries.
b) Construction industries.
c) Hospitals.
d) Research, Universities and technical and vocational training institutes
e) Manufacturers and Producers, amongst others.
f) Oil industries
g) Accredited laboratories
h) Aviation Industries
i) Steel production Industries
j) Sports
k) Regulators
l) Mining Industries
m) Shipping Industries
n) Transport Industries
o) Farmers
p) SME’s
q) Automobile Industries
r) Military
s) Railway
I want my equipment to be calibrated at KEBS. How do I go about this?
To have your equipment calibrated at KEBS, follow the easy steps as listed below:
Send a request for a quotation for calibration to info.metrology@kebs .org with the official name and address of the company (or individual) as it will appear on the certificate, the name, make and model of the equipment, the measurement range and whether the equipment is to be calibrated on site or at KEBS.
Our customer liaison officer will contact the laboratory regarding the request and will revert with a quotation. In case of any clarification, you will be contacted directly.
You will be required to present the quotation to KEBS cash office for a proforma invoice to be issued. This will contain the details required for payment to be through eCitizen.
Make the payment and deliver the equipment to KEBS. In case your requested for calibration to be done at your site, our officers will reach out to you to plan for site for calibration.
How do I make a payment for calibration services?
The Government of Kenya requires that all payments be made through the E-Citizen platform. Once you have the quotation, present it to KEBS cash office to be issued with a proforma invoice which contains the reference number which you will quote when paying through eCitizen.
KINDLY NOTE THAT YOU ARE REQUIRED TO PAY THE EXACT AMOUNT FOR THE PAYMENT TO BE FINALISED ON ECITIZEN AND A RECEIPT ISSUED. PAYING MORE OR LESS WILL REQUIRE THAT THE PAYMENT IS REVERSED AND REPEATED WHICH MAY LEAD TO YOU INCURRING ADDITIONAL CHARGES.
How do I send my equipment to KEBS for calibration?
There are several options available to you.
i) You can hand deliver the items to KEBS
ii) You can send the items to KEBS through courier services. We strongly advise that you communicate the handling requirements accurately to the courier services provider to avoid damage during transit.
iii) For non-local customers, kindly reach out to us to help you make the necessary custom clearance arrangements. In as much as you can do this on your own, our experience has shown us that it is much easier for KEBS to help you with the process. It will be your responsibility to meet any custom charges.
How do I contact KEBS Metrology for quotations and other general inquiries?
Our email address is info.metrology@kebs.org. Kindly send your inqu iries there and we shall respond to you.
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Accessibility Statement
metrology.kebs.go.ke
September 21, 2026
Compliance status
We firmly believe that the internet should be available and accessible to anyone, and are committed to providing a website that is accessible to the widest possible audience,
regardless of circumstance and ability.
To fulfill this, we aim to adhere as strictly as possible to the World Wide Web Consortium’s (W3C) Web Content Accessibility Guidelines 2.1 (WCAG 2.1) at the AA level.
These guidelines explain how to make web content accessible to people with a wide array of disabilities. Complying with those guidelines helps us ensure that the website is accessible
to all people: blind people, people with motor impairments, visual impairment, cognitive disabilities, and more.
This website utilizes various technologies that are meant to make it as accessible as possible at all times. We utilize an accessibility interface that allows persons with specific
disabilities to adjust the website’s UI (user interface) and design it to their personal needs.
Additionally, the website utilizes an AI-based application that runs in the background and optimizes its accessibility level constantly. This application remediates the website’s HTML,
adapts Its functionality and behavior for screen-readers used by the blind users, and for keyboard functions used by individuals with motor impairments.
If you’ve found a malfunction or have ideas for improvement, we’ll be happy to hear from you. You can reach out to the website’s operators by using the following email
Screen-reader and keyboard navigation
Our website implements the ARIA attributes (Accessible Rich Internet Applications) technique, alongside various different behavioral changes, to ensure blind users visiting with
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alongside console screenshots of code examples:
Screen-reader optimization: we run a background process that learns the website’s components from top to bottom, to ensure ongoing compliance even when updating the website.
In this process, we provide screen-readers with meaningful data using the ARIA set of attributes. For example, we provide accurate form labels;
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Disability profiles supported in our website
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Visually Impaired Mode: this mode adjusts the website for the convenience of users with visual impairments such as Degrading Eyesight, Tunnel Vision, Cataract, Glaucoma, and others.
Cognitive Disability Mode: this mode provides different assistive options to help users with cognitive impairments such as Dyslexia, Autism, CVA, and others, to focus on the essential elements of the website more easily.
ADHD Friendly Mode: this mode helps users with ADHD and Neurodevelopmental disorders to read, browse, and focus on the main website elements more easily while significantly reducing distractions.
Blindness Mode: this mode configures the website to be compatible with screen-readers such as JAWS, NVDA, VoiceOver, and TalkBack. A screen-reader is software for blind users that is installed on a computer and smartphone, and websites must be compatible with it.
Keyboard Navigation Profile (Motor-Impaired): this profile enables motor-impaired persons to operate the website using the keyboard Tab, Shift+Tab, and the Enter keys. Users can also use shortcuts such as “M” (menus), “H” (headings), “F” (forms), “B” (buttons), and “G” (graphics) to jump to specific elements.
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Notes, comments, and feedback
Despite our very best efforts to allow anybody to adjust the website to their needs. There may still be pages or sections that are not fully accessible, are in the process of becoming accessible, or are lacking an adequate technological solution to make them accessible. Still, we are continually improving our accessibility, adding, updating and improving its options and features, and developing and adopting new technologies. All this is meant to reach the optimal level of accessibility, following technological advancements. For any assistance, please reach out to