Air Velocity Testing Services in India

THE SERVICE

Air velocity testing in Ahmedabad, with traceable instruments.

Air velocity testing measures the speed of air leaving HEPA filters, laminar air flow units, biosafety cabinets and fume hoods. In unidirectional airflow zones the velocity must be high and uniform enough to sweep particles away from exposed product, so readings are taken across a grid on each filter face.

Air Velocity Validation involves measuring and confirming the speed of air movement within a system—such as HVAC ducts, cleanrooms, or biosafety cabinets—to ensure it aligns with design requirements and complies with relevant regulatory standards. This is especially important in the pharmaceutical, biotechnology, and food production industries, where precise air movement is required to avoid contamination, maintain product quality, and assure regulatory compliance.

At Kesar Testing Service LLP , we offer precise and reliable Air Velocity Validation Services to help you ensure that your controlled environments maintain optimal airflow conditions. Whether you operate a pharmaceutical cleanroom, laboratory, healthcare facility, or a manufacturing plant.

Why choose Kesar Testing Service LLP For Air Velocity Validation Service in India ?

Trained experienced professionals

Modern air velocity equipments

Fast turnaround and detailed documentation

Fully compliant with industry standards

We utilize calibrated and certified instruments like: Hot-wire anemometers, Vane anemometers & Capture hood . Feel free to contact us for reliable Onsite Air Velocity services across India.

Our Validation Services

HEPA Filter Integrity Validation

Recovery test validation

Temperature and Humidity mapping

LUX and Noise Mapping

Compressed Air Validation

Equipment Validation

calibration.kesar@gmail.com

What we test

HEPA filter face velocity
Laminar air flow units
Biosafety cabinets
Fume hood face velocity
Dispensing and sampling booths
Unidirectional airflow zones
Grid-wise uniformity check

What you receive

Velocity readings per grid point
Average and uniformity calculations
Acceptance criteria versus results
Anemometer calibration certificates attached

WHY IT MATTERS

Why air velocity testing matters
for Gujarat's industries.

Documented, repeatable testing shows your controlled environments perform as designed.

First-air protection

Confirming velocity and uniformity at the working position shows that unidirectional air is protecting exposed product and components as the design requires.

Early filter warnings

A falling average velocity often signals filter loading or a fan problem, giving maintenance teams time to act before cleanliness limits are exceeded.

Operator safety

For biosafety cabinets and fume hoods, adequate inflow and face velocity help contain hazardous aerosols and vapours within the cabinet and away from staff.

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.

FREQUENTLY ASKED

Air velocity testing in Ahmedabad: your questions.

Can’t find what you need? Call +91 63579 03105 or email calibration@kesartesting.com.

What air velocity is expected in a Grade A unidirectional zone?

EU GMP Annex 1 gives a guidance range of 0.36 to 0.54 m/s for unidirectional airflow in Grade A zones, measured at the working position unless otherwise justified. The site should state its own acceptance criteria, measurement height and grid in the protocol, based on Annex 1, the equipment design and the user requirement specification.

Which instrument is used for air velocity measurement?

Thermal (hot-wire) anemometers are commonly used for the low velocities found at filter faces and in laminar air flow units. Vane anemometers suit larger grilles and higher velocities, while capture hoods measure volume directly. Whichever instrument is used, it should be calibrated and its uncertainty considered when results are close to the limit.

Where on the filter are velocity readings taken?

Readings are taken at a grid of points across the filter face or working opening, at a defined distance from the filter or at the working height. ISO 14644-3 describes the grid approach. The average velocity and the spread between individual readings are both reported, because non-uniform flow can disturb unidirectional airflow.

Is air velocity testing the same as an air flow test?

They are related but not identical. Air velocity testing measures the speed of air at specific points, mainly for unidirectional airflow devices and zones. An air flow test usually measures total supply volume to calculate air changes per hour in turbulent-flow rooms. Velocity readings across a filter can be used to derive its volume.

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