Zitex® A Filter Membranes
Manufactured by a unique process which produces pure PTFE replicas of various media, Zitex A is available in a number of various filter porosities and thicknesses. It is commonly supplied in 12 in. wide rolls with continuous lengths up to 100 ft. long. Zitex A can withstand severely corrosive conditions at temperatures between +550°F (+228°C), and -450°F (-268°C), making it the ideal solution for a variety of engineering problems in the chemical, electrical, packaging, filtration, medical and aerospace industries.
Pore Geometry
Zitex A filter membranes are reproductions of standard filter papers and consequently have the same tortuous, fibrous filter paths. The membranes act as "depth filters" with high retention efficiency and non-clogging characteristics.
Unlike cellulos filter paper, however, the PTFE interstices are bonded together. The resulting pore size stability allows Zitex to act as an "absolute" filter. This unique combination of depth and screen filtering ability means Zitex is a more effective filter membrane medium.
Cat.
No.
|
Max. Function Pore Size (microns)
|
Thick.
|
Flow Rates
|
Initiation Pressure for Water
|
Ethanol Bubble Point
|
Approx. Pore Vol.
|
|
Water
|
Air
|
|
mils
|
mm
|
A
|
B
|
secs
|
lbs./in.2
|
kg/cm2
|
lbs./in.2
|
atm
|
%
|
| A-105 |
30 - 60 |
7.5 |
.20 |
300 - 450 |
1200 - 1800 |
.04 - .10 |
.18 - .36 |
.01 - .03 |
.10 - .20 |
.007 - .014 |
75 |
| A-110 |
30 - 60 |
2.5 |
.06 |
185 - 230 |
750 - 920 |
.10 - .20 |
.30 - .60 |
.02 - .04 |
.12 - .24 |
.008 - .016 |
65 |
| A-115 |
30 - 60 |
19.0 |
.48 |
60 - 90 |
240 - 360 |
.20 - .45 |
.30 - .55 |
0.02 - .04 |
.12 - .27 |
.008 - .018 |
70 |
| A-125 |
30 - 60 |
25.0 |
.64 |
55 - 75 |
220 - 300 |
.25 - .40 |
.40 - .55 |
.03 - .04 |
.15 - .22 |
.010 - .015 |
75 |
| A-130 |
30 - 60 |
26.0 |
.66 |
25 - 35 |
100 - 140 |
.60 - 1.70 |
.25 - .50 |
.02 - .04 |
.15 - .25 |
.010 - .017 |
60 |
| A-135 |
20 - 30 |
5.0 |
.13 |
110 - 155 |
440 - 620 |
.40 - .70 |
.60 - 1.20 |
.04 - .08 |
.25 - .40 |
.017 - .027 |
65 |
| A-140 |
10 - 20 |
8.0 |
.20 |
80 - 110 |
320 - 440 |
.70 - 1.70 |
.80 - 1.60 |
.06 - .11 |
.35 - .50 |
.024 - 0.34 |
65 |
| A-145 |
10 - 20 |
4.5 |
.13 |
30 - 80 |
120 - 320 |
1.50 - 2.50 |
.90 - 1.80 |
.06 - .13 |
.40 - .70 |
0.27 - .048 |
65 |
| A-150 |
5 - 10 |
6.0 |
.14 |
11 - 26 |
44 - 106 |
4.50 - 7.50 |
1.30 - 2.60 |
.09 - .18 |
.70 - 1.10 |
.048 - .075 |
65 |
| A-155 |
2 - 5 |
7.0 |
.18 |
2 - 5 |
8 - 20 |
20.0 - 90.0 |
1.80 - 3.60 |
.13 - .25 |
1.00 - 1.40 |
.068 - .100 |
60 |
| A-160 |
XX - XX |
XX |
XX |
XX |
XX |
XX |
XX |
XX |
XXX - XX |
XXXX |
XX |
Data shown are representative and not to be used as material specifications.
(1) A = Gallons/minute/ft2 @ 13.5 psi., B = Ml/minute/cm2 @ 70 cmHg.
(2) Time required for 100cc to pass through 1 square inch @ Δ P 0.176 psi (Gurley test).
(3) Pressure differential necessary to overcome hydrophobic and internal resistance.
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Call or email us for more details.
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