Explore technical publications from Cleanroom Metrology covering cleanroom metrology, particle calibration, PSL wafer standards, microsphere sizing, and airflow visualization. Our articles provide practical insights to help engineers, quality teams, and laboratory professionals make informed decisions about calibration and cleanroom testing.
Choose a cleanroom fogger by matching fog output, operating fluids, outlet configuration, and accessories to your airflow visualization study. Compare water-only AFM models with Apollo liquid nitrogen foggers before requesting
Particle diameter and particle-number concentration answer different questions, so choose a counter standard by evaluating both. Diameter identifies the size reference your documented method requires. Concentration tells you how many
“NIST-traceable” does not mean a particle standard has approval from the National Institute of Standards and Technology (NIST). Traceability applies to a specified measurement result—such as a particle diameter assigned
Here’s how to choose particle counter calibration standards: start with the instrument’s documented procedure, then match diameter, material, format, measurement medium, concentration, documentation, and handling requirements. A cleanroom class or
Performing calibration and verification in accordance with ISO 21501-4 helps ensure that light-scattering airborne particle counters (LSAPCs) produce reliable particle sizing and concentration measurements. Instruments conforming to this document are
Your SSIS tool calibration is only as valid as the PSL size you select. Order the wrong size from a 18-option catalog and your scanner will produce size response data