Daily Checks 43
10. The Maximum Fit Factor Check is performed after the Zero
Check. This check determines if the PortaCount Fit Tester is
capable of measuring high fit factors and if the internal switching
valve is functioning properly. The test is essentially a fit test on a
HEPA filter which simulates a perfect fitting respirator.
A very high fit factor should result if the instrument is working
properly. The Max FF Check actually measures the maximum fit
factor that can be determined by the PortaCount Fit Tester given
the local ambient particle concentration and the respirator sample
time programmed into the PortaCount Fit Tester.
Daily Check History Feature
A daily check history feature is available to provide a quick method for
viewing and searching daily check records.
1. Click on then click on .
2. Search for a daily check record by typing a PortaCount Serial
number or Date/Time in .
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