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Dust calibration is the only way to know if your air monitoring data is real or just a guess. Whether you are monitoring silica on a construction site or checking indoor air quality in an office building, your numbers have to be right.
When an auditor asks for proof, a sticker on the side of your machine is not enough. You need valid paperwork from a lab that knows what it is doing.
At CIH Equipment, we take the guesswork out of your safety program. We operate an accredited lab that serves industrial hygienists and safety managers across the entire United States.
From the humid shipyards of the East Coast to the dry, dusty plains of the West, we help you keep your equipment reading true.
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You rely on your instruments to protect workers’ lungs. Over time, sensors get dirty. Pumps wear out. Electronics drift. Equipment calibration resets your device so it matches a known standard.
Without this service, a monitor might read “safe” levels when the air is actually full of particulate matter.
We handle a wide range of aerosol monitors and dust samplers. Our technicians clean the optical chambers and test the flow systems. We do not just adjust the numbers. We verify the health of the entire machine.
What we check during service:
- Zero Stability: Does the unit read zero in clean air?
- Flow Rate: Is the pump pulling the correct volume of air?
- Span Response: Does the sensor react correctly to test dust?
- Filter Integrity: Are the internal filters clogged or leaking?
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Not all calibration stickers mean the same thing. Some shops just blow off the dust and send it back. You need an accredited laboratory that follows ISO/IEC 17025:2017 standards.
This accreditation proves our competence. It means an outside body audits our math, our methods, and our equipment.
When you send your unit to us, you get NIST-traceable results. This creates a chain of evidence. It links your specific instrument back to national standards held by the National Institute of Standards and Technology.
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We are not a faceless giant. We are a team of experts based in Clearwater, Florida, supporting clients nationwide. We know that when you ship us a unit, you are losing a tool you need for your job. You cannot afford to wait weeks for it to come back.
We prioritize fast turnaround times. Our lab runs efficiently, so you get your gear back in the field. We handle the shipping logistics and keep you updated. We treat your equipment like it belongs to our own neighbors.
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What is dust calibration?
It is a process where a technician compares a dust monitor’s readings against a calibrated gravimetric standard. The technician adjusts the monitor to match the gravimetric standard with a calculated K-factor, verifying it measures airborne particulate matter accurately.
How often should I calibrate my dust monitor?
Most manufacturers recommend service once a year. However, if you use the device in very dirty environments like mining or demolition, you might need service every six months to maintain accuracy.
What is the difference between factory and ISO calibration?
Factory calibration resets the unit to manufacturing specs. ISO/IEC 17025:2017 calibration adds a layer of third-party validation, strict documentation, and uncertainty calculations that regulatory bodies often prefer.
Do you service all brands of dust monitors?
We service most major brands used in industrial hygiene and environmental monitoring. Contact us with your specific model number to confirm we can handle your instrument.
Get Your Equipment Verified Today
//Don’t let bad data shut down your project. Send your monitors to a lab that prioritizes precision and speed. We are ready to help you meet your safety goals.
Call CIH Equipment now or fill out our quick service request form to start the process. Let’s get your gear back to work.