FMLW04700
Synonym(s):
Fluoropore Membrane Filter
| Size/SKU | Availability | Price |
|---|---|---|
100 filters | Check Cart for Availability | $959.00 |
PTFE membrane, gridded filter, white filter
non-sterile
hydrophobic
Fluoropore®, Millipore
Greener Alternative Product
122 mL/min-cm2 water flow rate, 130 °C max. temp., 6 L/min-cm2 air flow rate
47 mm
47 mm
150 μm
Fluoropore®
5.0 μm pore size, 85 % porosity
≥0.48 bar, air with water at 23 °C
ambient
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This Item | |||
|---|---|---|---|
| diam. 47 mm | diam. 90 mm | diam. 47 mm | diam. 142 mm |
| material PTFE membrane, white filter, gridded filter | material PTFE membrane, plain filter, white filter | material PTFE membrane, plain filter, white filter | material PTFE membrane, plain filter, white filter |
| pore size 5.0 μm pore size, 85 % porosity | pore size 1.0 μm pore size, ≥65 % porosity | pore size 0.45 μm pore size, >60 % porosity | pore size 1.0 μm pore size, ≥65 % porosity |
| parameter 122 mL/min-cm2 water flow rate, 6 L/min-cm2 air flow rate, 130 °C max. temp. | parameter ≥150 mL/min-cm2 flow rate (27.5inHg, methanol), ≥300 mL/min-cm2 air flow rate (Gurley), 130 °C max. temp. (Curling observed at elevated temperatures) | parameter ≥60 mL/min-cm2 flow rate (27.5 inHg, methanol), >0.5 L/min-cm2 air flow rate (Gurley), 100 °C max. temp. (Curling may occur at elevated temperatures) | parameter ≥150 mL/min-cm2 flow rate (27.5 inHg, methanol), ≥300 mL/min-cm2 air flow rate (Gurley), 130 °C max. temp. (Curling observed at elevated temperatures) |
| manufacturer/tradename Fluoropore®, Millipore | manufacturer/tradename Fluoropore®, Millipore | manufacturer/tradename Fluoropore®, Millipore | manufacturer/tradename Fluoropore®, Millipore |
| sterility non-sterile | sterility non-sterile | sterility non-sterile | sterility non-sterile |
Explore all of our products under PTFE Membrane Filter, 5.0 μm Pore Size
10-13 - German Storage Class 10 to 13
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What is the reason for the difference in air flow rate between the FSLW04700 Millipore Fluoropore with a 3.0 µm pore size and the FMLW04700 Millipore Fluoropore with a 5.0 µm pore size, both made of hydrophobic PTFE and 47 mm membrane?
The relationship between flow rate and pressure drop is such that the lower the flow rate, the lower the pressure drop. Fluoropore membranes come in 3 and 5 µm pore sizes. The smaller pore size offers low FWHM, while the larger pore size results in very low pressure drop and greater throughput capacity, thereby minimizing the number of filter changeouts.
*FWHM refers to the full width at half of the maximum height of the P0-218 peak obtained during sampling of room air.
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Why is the backing of the FMLW04700 5.0 um PTFE 47mm disc gridded? Additionally, what is the reason for the gridded backing on FMLW03700, FMLW02500, SA1J014I14, and SA1J006I15, which are also "FMLW" discs with different diameters?
The FMLW04700 5 um PTFE membrane with a white gridded backing is designed for air alpha monitoring of radioactive particles. In this application, the filter membrane must be oriented in the alpha monitoring instrument so that the PTFE side faces the air flow. The gridded backing serves the purpose of making it easy to distinguish between the two sides. The backing is necessary because the PTFE membrane alone can be floppy and difficult to handle, particularly in field testing scenarios.
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