PTFE Unlaminated Membrane Filters, Hydrophobic, 3 Micron, 47mm, 100/Pk

Performance by Pore Size

Pore Size Rating (µm)	Thickness (µm)	Air Permeability1 (L/min·cm² at 70mbar)	Clean Water Flow2 (mL/min·cm² at 0.7bar)	Water Entry Pressure (psi)	Alcohol Bubble Point3 (psi)
0.2	25-51	0.3-0.9	15	NT	19-26
0.45	25-51	0.5-1.4	NT	>45	13-23
1.0	203-305	0.9-1.1	61-92	5.5-6.5	1.0-1.4
3.0	75	NT	300	NT	1.9
5.0	152-254	1.1-1.3	92-153	3.5-4.5	0.8-1.2
10	130	>1.2	>94	NT	0.7

Notes:
1. Airflow values calculated assuming linear relationship between volumetric airflow and differential pressure.
2. Water flows measured after prewetting with alcohol and calculated assuming linear relationship between flow and differential pressure.
3. Bubble points for 0.2µm, 0.45µm, and 3.0µm pore sizes measured using IPA; all others measured using ethanol.