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Gravimetric Weighing
- TSP/
 PM10
- Concentration Calculations
- Standard 8X10 or 47 mm filters
- Pre- and Post-Weighs
- Complete Chain-of-Custody
- Independent Balance Certification
- Gravimetric Analysis
- Glass Fiber, Quartz Fiber, Teflon Filters
- Source Testing Media
- Data Validation
- Data Reporting in State and EPA formats
- Additional Analyses Available
Meteorological Solutions Inc. (MSI) personnel have been providing gravimetric services to numerous clients throughout the United States for approximately 10 years. All weighing activities are performed in accordance with the applicable EPA reference method. MSI provides NIST traceable measurements in an environmentally controlled laboratory. The analytical balance is calibrated daily with NIST traceable standards and is serviced at least once per year by an independent balance service. MSI’s analytical balance has a minimum resolution of 0.1 mg and a precision of 0.5 mg.
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Meteorological Solutions Inc. has strict quality assurance procedures in place to provide accurate weighing results. Filters are equilibrated in a climate controlled enclosure for 24 hours. Variables, such as temperature and humidity, are controlled in the chamber to reduce their effect on the weight of the filters. Temperature and humidity conditions are set daily to NIST traceable standards. The balance is zeroed and calibrated prior to any weighing activities. At least ten (10) percent of all clean and exposed filters are audited. Complete laboratory weighing procedures are available upon request.
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