
NABL Accredited Calibration & Validation Services in India
Accuracy that stands up to every audit.
Reliable calibration and validation solutions for the environments where accuracy matters most.
Accredited expertise. Measurable confidence.

IN PRACTICE
WHO WE ARE
NABL accredited calibration lab
in Ahmedabad, Gujarat.
Your partner in precision and compliance.
Kesar Testing Service LLP is an NABL accredited laboratory committed to providing high-quality, reliable and compliant calibration, validation and testing solutions. Our skilled team brings accurate data and expert insight to every project.
WHAT WE DO
Calibration & validation services
in Ahmedabad, Gujarat.
From precise measurements to controlled environments, our services help you work with confidence.

THE KESAR STANDARD
Every measurement
has a meaning.
We pair qualified specialists with advanced instruments to help safeguard quality, performance and compliance.
Our accreditationEXPLORE MORE
Specialist services,
tailored to your needs.
01Acceleration / Speed
Acceleration/Speed Calibration is the process of testing and modifying equipment that detect speed or acceleration, such as…
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02HEPA Filter Integrity Validation
HEPA Filter Integrity Validation is the process of testing and verifying that a High-Efficiency Particulate Air (HEPA) filter is…
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03Air Velocity
Air Velocity Validation involves measuring and confirming the speed of air movement within a system—such as HVAC ducts…
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Where precision is
non-negotiable.
We support industries that demand high standards of cleanliness, precision and regulatory compliance.
Pharmaceuticals
Cleanrooms, stability chambers, HVAC and QC instruments for GMP manufacturing.
Scientific & QC labs
Balances, pipettes, thermometers and analytical support equipment.
Healthcare & hospitals
Operation theatres, isolation rooms and critical medical equipment.
Medical devices
Controlled assembly areas and measuring equipment for device makers.
Biotechnology
Biosafety cabinets, incubators and controlled environments.
Food & beverage
Process temperatures, compressed air and storage conditions.
Cosmetics
Filling lines, storage areas and weighing equipment.
Electronics
Electrical test equipment and clean assembly environments.
HOW WE WORK
How our Ahmedabad lab works with you.
Every engagement follows the same disciplined steps, so results are consistent and audit-ready.
- 01
Scope your requirement
Share your instrument list, rooms or systems and the standards you work to. We confirm parameters, ranges and acceptance criteria before anything is scheduled.
- 02
Plan the work
We agree dates, on-site or in-lab handling and the protocol to follow, so production and QA know exactly what will happen and when.
- 03
Measure with traceable standards
Qualified engineers carry out the work using calibrated reference instruments traceable to national standards, recording raw data as they go.
- 04
Report and certify
You receive clear certificates and reports — results, uncertainty or acceptance criteria, and traceability — ready for audits and regulatory inspections.
CLIENT VOICES
Trusted by the people
who sign off quality.
What QA, production and maintenance leaders say about working with our team.
Impressed by their technical knowledge and commitment to quality. The team explained every detail and delivered exactly as promised. Highly recommended for any critical validation work.
Prompt service, accurate documentation, and compliance expertise — that’s why we trust Kesar Testing for all our thermal and HVAC validations.
Kesar Testing Service LLP stands out for their reliability and professionalism. Their efficient onsite testing helped us stay on schedule without compromising on compliance.
From initial coordination to final reporting, everything was handled smoothly and on time. Their team is responsive and technically sound.
FROM OUR JOURNAL
Ideas worth measuring.

Digital Advances in Mechanical Calibration Technology
In today’s fast-growing world, mechanical calibration plays a key role in manufacturing, healthcare, pharmaceuticals, and engineering…
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HEPA Filter Integrity in Healthcare Settings
HEPA (High-Efficiency Particulate Air) filter keep the air clean by catch the 99.97% of small objects from the air, like germs, viruses…
Read article
Why Kesar Testing Service LLP for the Best Calibration & Validation Services in Ahmedabad, Gujarat, India?
Kesar Testing Service LLP offers a full range of mechanical, thermal, electrical, and dimensional calibration services in Ahmedabad…
Read articleSERVICE LOCATIONS
Calibration services
across India.
On-site calibration and validation teams travel from our Ahmedabad laboratory to industrial hubs nationwide.
FREQUENTLY ASKED
Questions, answered.
Can’t find what you need? Call +91 63579 03105 or email calibration@kesartesting.com.
How often should calibration and validation be performed?
It depends on regulatory requirements, how critical the equipment is and how heavily it is used. Calibration is usually done annually or at the interval set in your SOPs. Cleanrooms and critical equipment are typically revalidated annually, and again after major maintenance or changes.
Do you provide on-site calibration and validation?
Yes. We calibrate many instruments at your facility to avoid downtime and shipping risk, and handle other instruments in our Ahmedabad laboratory. Cleanroom and HVAC validation is always carried out on-site.
Which regions do you cover?
We serve clients across India from our laboratory in Vatva GIDC, Ahmedabad, including Gujarat, Maharashtra, Delhi NCR, Karnataka, Telangana, Andhra Pradesh, Madhya Pradesh, Goa and Himachal Pradesh.
Is Kesar Testing Service LLP NABL accredited?
Yes. We are accredited by NABL to ISO/IEC 17025:2017 in the field of calibration (certificate CC-4388, valid until 1 May 2029). We have held NABL accreditation since 2018, and you can verify our scope on the NABL website.
What documentation will we receive?
Calibration certificates show measured values, measurement uncertainty and traceability to national standards. Validation reports include the protocol, raw data, results against acceptance criteria and the calibration certificates of the instruments we used.
LET'S WORK TOGETHER
Your calibration partner
in Ahmedabad, Gujarat.
Talk to our team about calibration, validation and testing for your facility.
