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Filter Weighing


Filter Weighing Software (FWS) - MTL has designed a software solution for the weighing of gravimetric filters. The Filter Weighing System will run your entire weighing process. It works with MTL’s Autohandler to manage the life cycle of a filter: everything from the collection of weighing and sampler data, to performing data validation and issuing reports. You will always know exactly what’s going on in your weighing process and be able to recall whatever data you require. The Filter Weighing System also works with a manual weighing system by giving screen prompts on when to load and unload filters.

Environment -The system will monitor your environment and raise flags if environmental conditions fall outside of the administrator-set parameters. If preferred, the system can be set to halt weighing completely in the event of environmental non-compliance. When the environment returns to acceptable conditions, the MTL system can continue to lock out weighing until the EPA-mandated 30 minute wait period has been reached.

Step by Step -The Filter Weighing Software package steps the laboratory technician through the proces of weighing a filter. This user-friendly approach ensures that the weighing procedure is followed in precisely the same manner every time. It cuts down on the need for training, reduces uncertainties associated with poorly developed methods, and enables technicians to do their jobs more effectively.


The system comes with a variety of options in terms of weighing method. The administrator can set up the software to do a direct read (tare the balance, record the first stable reading) or a drift-corrected approach (calculate and subtract the balance’s drift from the measurement result.) The system can also step the user through the process of a mutliple weighing, with requisite calculation of mean values and standard deviations.

Regulatory Compliance

The FWS system has been engineered specificially with 40 CFR 1065 in mind. It will enhance your laboratory’s ability to comply with the standards and obtain accurate results.


All weighings which take place in an MTL weighing system are time-stamped with the data used to create them. This includes balance readings, environmental readings, time of day, operator of system, and more. Data are then stored in an MS SQL™ database, which can generate reports for each filter, which come with all pertinent data and confirmation that quality control procedures have been met. The end result is data with complete documentation to back it up.

Quality Control

Quality control is the foundation of all precision measurement systems, and it is important to us. The MTL Filter Weighing Software package has been engineered by metrologists to provide assurance that sound measurement results will stand up under scrutiny. Environmental conditions are checked, reference filters are repeatedly weighed, and laboratory check standards are implemented. You can rest assured that with MTL’s Filter Weighing Software in place, your people are getting good results.

Please contact us for more details and pricing.

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