The NIST-traceable calibration certificate issued by Mesa Labs is only valid for one year. We recommend an annual recertification of your calibrator. When you send your calibrator back to the factory for recertification, we will also inspect the unit and perform any necessary repairs.
If you are required to perform EPA-style sampling for PM2.5, you should choose the PQ200. If you are only sampling for PM10, you can choose either the PQ100 or PQ200. If you do not require a government-approved sampler and want a portable, lightweight sampler, check out the Omni-FT. If you have further questions about choosing the correct sampler, please contact customer service.
Our normal hours of operation are Monday through Friday, from 8:00 AM to 4:30 PM EST.
Mesa Labs is the only authorized service center for our products in the United States. TPF Control in Wijchen, Netherlands can also service Mesa Lab’s BGI calibrators, in addition to the DryCal calibrators.
While we cannot not guarantee a specific return date, our normal service time is typically about 10 business days from the day we receive your Mesa product to the day we return ship the product.
Keep in mind that Mesa does not begin service of your product until all appropriate paperwork, price approvals, and payment details are settled. The time it takes to settle these issues are independent of the service time. Your cooperation in providing Mesa with all necessary paperwork and/or approvals will help ensure a faster turnaround time.
We manufacture the BGI line in our Butler, NJ facility, which holds a ISO 9001 certification. This certification is required for the manufacture of U.S. EPA FRM instruments.
Per the US EPA methods, there are two ways to confirm the flow rate of your FRM sampler:
A verification is a comparison between your instrument and a NIST-traceable flow standard at the instrument’s operating flow rate. The instrument passes the flow verification if it agrees within 4% of the flow standard.
A three-point calibration is a comparison between your instrument and a NIST-traceable flow standard at three separate flow rates: the operating flow rate and 10% above and below the operating flow rate (15 LPM, 18.4 LPM, 16.7 LPM). If your sampler differs from the flow standard by more than ±2%, adjust the sampler’s flow rate to agree with the flow standard.
For instructions on how to do a flow verification or calibration on your BGI sampler, download your manual here.
The US EPA recommends that you perform a 3-point flow calibration when you first install the instrument and at least once per year following that. You should also perform a single point flow verification monthly.