BRAND: GESTER
Model : GT-RA04
Lab Location:KSS-502 room at 5th floor of Kasamsri building  
Fundamental : The equipment is used for measuring a differential air pressure at the interface of a sample with the steady continuous flow at 8 L/min. The test method follows international ASTM F2100 and EN 14683 Annex C
Type of samples :Surgical mask or Material fabric
Size of samples : The sample diameter should be greater than 25 mm
Testing methods : ASTM F2100 (EN 14683 Annex C)