Solutions for MINING COMPANIES
Stay Compliant with MSHA’s New Silica Rule
The Mine Safety and Health Administration (MSHA) has implemented a new silica rule to protect miners from respirable crystalline silica exposure. With strict compliance deadlines approaching, mining companies must take immediate action to ensure their workforce is protected and compliant.
At OHD, we provide a complete compliance solution with industry-leading respirator fit testing and air sampling equipment designed to help mining operations meet the new regulatory standards.
QuantiFit2™ Respirator Fit Tester
Fast, Reliable Fit Testing with No Consumables
Unmatched Accuracy
The QuantiFit2™ uses Controlled Negative Pressure (CNP) technology to directly measure respirator leakage, offering the most precise fit test available.
Compliance Assurance
Fully compliant with OSHA and other governing bodies, the QuantiFit2™ provides the assurance that your mining operation maintains compliance with MSHA’s silica rule and other occupational safety requirements with confidence
Rapid Testing Process
Capable of completing fit tests in as little as two minutes, the QuantiFit2™ minimizes downtime by providing a fast, simple testing process.
Ease of Use
With intuitive operation, including AutoStart for touchless testing and guided animations with step-by-step instructions, the QuantiFit2™ makes fit testing simple and efficient for mining crews.


AeroFit™ Respirator Fit Tester
Versatile Fit Testing for Elastomeric and Disposable Respirators
Versatility
Using Condensation Nuclei Counting (CNC) technology, AeroFit™ provides precise fit testing for both disposable and elastomeric respirators, ensuring comprehensive coverage for miners’ respiratory protection needs.
User-Friendly Interface
With an intuitive touchscreen and guided step-by-step instructions, AeroFit™ simplifies the fit testing process, making it accessible for both experienced safety personnel and first-time users.
Portability
Battery-powered and built for field use, AeroFit™ allows on-site fit testing in remote mining locations without reliance on external power sources.
Reliable Compliance
AeroFit™ supports MSHA and OSHA-compliant fit testing, helping mining companies meet regulatory requirements with confidence and efficiency.
Gilian Air Sampling Pumps and Calibrators
Precision Monitoring for Silica Exposure
Accurate & Reliable Monitoring
Gilian air sampling pumps provide high-performance personal and area air sampling to measure airborne contaminants in challenging mining conditions.
Flexible Sampling Options
Supports a variety of sampling methods to meet the specific needs of mining operations, from personal exposure assessment to area monitoring.
Precise Calibration
The Go-Cal Pro ensures air sampling pumps are accurately calibrated to maintain compliance with exposure assessment requirements.


Logic Cloud
Streamline Compliance Tracking
Effortlessly monitor fit testing compliance across all your locations and devices. Logic Cloud centralizes your data, providing a seamless platform for meticulous oversight.
Unlock Powerful Reporting Tools
Logic Cloud equips you with robust reporting tools, enabling comprehensive evaluations of your fit testing program. Search, find, print results, and run reports on your testing program from any computer connected to the internet.
Automate Reminders to Your Team
Say goodbye to manual tracking and potential oversights. With Logic Cloud, set automated notifications to alert your team promptly as fit testing deadlines approach or lapse. Proactive compliance has never been easier.

Ensure Compliance with OHD’s Industry-Leading Solutions
Ensuring MSHA compliance requires more than just equipment—it requires expert guidance and trusted solutions. OHD is the industry leader in fit testing and air sampling solutions, providing mining companies with the tools they need to protect their workforce and meet regulatory requirements.
Don’t wait until compliance deadlines arrive. Partner with OHD today to safeguard your workers and simplify regulatory compliance.