Relative humidity testing measures how much moisture is in the air of a cleanroom, chamber or storage area, and confirms it stays within the range the space requires. Humidity that is too high or too low can spoil products, encourage microbial growth or cause static and corrosion, so relative humidity testing gives the measured proof…
Temperature mapping is the study that proves temperature and humidity are uniform and within specification everywhere inside a controlled space, not just at one convenient sensor. By placing calibrated data loggers throughout a room, chamber or storage unit and recording over time, temperature mapping reveals the hot and cold spots that a single fixed reading…
Differential pressure testing confirms that each cleanroom is held at the correct pressure relative to the areas around it. This pressure cascade is what stops dirty air from drifting into a cleaner space, so differential pressure testing provides the measured evidence that the invisible barrier between rooms is actually in place. This guide explains what…
Air changes per hour (ACPH) testing measures how many times the entire volume of air in a cleanroom is replaced with filtered air every hour. Enough air changes are what keep contamination from building up, so air changes per hour testing gives the measured proof that a room is ventilated well enough to hold its…
Airflow velocity testing measures how fast and how evenly air moves through a cleanroom or clean-air device. Air speed drives everything from unidirectional flow to how quickly contamination is swept away, so airflow velocity testing gives the measured evidence that a controlled space is moving air the way its design requires. This guide explains what…
Fume hood testing confirms that a laboratory fume hood is safely drawing hazardous vapours, gases and dusts away from the person working at it. A fume hood that appears to run normally can still have a face velocity that is too low to contain fumes, so fume hood testing measures the actual airflow and containment…
Biosafety cabinet testing confirms that a biosafety cabinet (BSC) is protecting the three things it is designed to protect — the operator, the product and the environment. Because a cabinet can look and sound normal while its airflow or filters have drifted out of specification, biosafety cabinet testing measures the actual performance so that containment…
Laminar air flow testing confirms that a laminar air flow (LAF) unit or clean bench is delivering the smooth, unidirectional, filtered air it is meant to provide. Rather than assuming a bench is working, laminar air flow testing measures air velocity, flow uniformity and filter integrity so that the protected work zone stays genuinely clean…
Clean room environmental monitoring is the ongoing programme of measurements that keeps a controlled environment inside its cleanliness limits between formal tests. Where certification proves a room passes on a given day, clean room environmental monitoring watches the room continuously — tracking particles, airflow, pressure, temperature and humidity so that any drift is caught early,…
Clean room performance testing is the set of measurements that confirm a controlled environment is actually performing to its designed cleanliness class. Rather than assuming a room is in control, performance testing proves it — checking particles, airflow, pressure, filtration and recovery against ISO 14644 limits and producing a documented, audit-ready result. This guide explains…