Duo-Fine® II Series Filter Cartridges

Materials of construction

Filter media:

50 μm:	Spunbonded polyester
All other grades:	Borosilicate microfiberglass with acrylic binder
Support material:	Spunbonded polyester
Netting:	Polypropylene
Hardware:	Polypropylene
Sealing:	Thermal bond
Gaskets/O-rings:	Silicone elastomer, nitrile, fluorocarbon elastomer, hydrocarbon rubber, FEP encapsulated silicone, expanded PTFE, white nitrile, white silicone

Dimensions (nominal)

Outside diameter	6.6 cm (2.6 in)
Lengths:	10.2 cm (4 in), 24.8 cm (9.75 in), 25.4 cm (10 in), 49.5 cm (19.5 in), 50.8 cm (20 in), 74.3 cm (29.25 in), 76.2 cm (30 in), 99.1 cm (39 in), 101.6 cm (40 in)

Performance Specifications¹

Filter grades

0.2, 0.45, 1, 3, 10, 30, 50 μm

Recommended change-out differential pressure²

2.4 bard (35 psid)

Maximum Differential Pressure

4.8 bard (70 psid) @ 20 °C (68 °F)
2.8 bard (40 psid) @ 65 °C (150 °F)

Sterilization

All Duo-Fine II Series cartridges may be autoclaved for 30 minutes at 121 °C (250 °F) under no end load conditions.

Particle Retention (μm)

	Liquid Service Gas Service (by ASTM F-795 Test)		Gas Service
Cartridge Designation	90% Efficiency	99.9% Efficiency	Removal Efficiency by DOP Test
DFNT 0.2	0.2	1	99.999%
DFNT 0.45	0.45	2	99.998%
DFNT 1	1	4	96%
DFNT 3	3	10	---------
DFNT 10	10	18	---------
DFNT 30	30	45	---------
DFNT 50	50	75	---------

Liquid removal ratings are based on Pall's Dynamic Efficiency test protocol. This single pass, destructive challenge test is based on ASTM F-795 test procedures for determining the performance of a filter.

Typical Flow vs. Differential Pressure for Application Sizing

Unit conversion: 1 bar = 100 kPa

Flow rate is for a 25.4 cm (10 in) cartridge. For liquids other than water, multiply differential pressure by fluid viscosity (cP).

¹ WIth compatible fluids that do not swell, soften or attack any of the filter components.
² Provided that the maximum differential pressure is not exceeded based on temperature limits defined above.

Filter Cartridges

Pall Part Number = DFNT [1] - [2] U [3] - [4] [5] - [6]

Table 1

Code	Filter grades (μm)
0.2	0.2
0.45	0.45
1	1
3	3
10	10
30	30
50	50

Table 2

Code	Cartridge lengths (cm/ in) nominal
4	10.2/4
9.75	24.8/9.75
10	25.4/10
19.5	49.5/19.5
20	50.8/20
29.25	74.3/29.25
30	76.2/30
39	99.1/39
40	101.6/40

Table 3

Code	Gasket/O-ring materials
S	Silicone
N	Nitrile
E	Hydrocarbon rubber
V	Fluorocarbon elastomer
T	FEP encapsulated silicone (O-rings)
M	White silicone
W	White nitrile (gaskets)
X	No O-ring required (M2 style only)
T	Expanded PTFE (gaskets)

Table 4

Code	End configurations
Blank	DOE with elastomer gasket seals and end caps
1X	DOE 2.54 cm (1 in) extended core
M2	SOE flat closed end, fits housings with 020 O-ring post
M3	SOE flat closed end, external 222 O-rings (retrofits other manufacturers’ Code 0)3
M3H	SOE large diameter closed end external 222 O-rings
M5	DOE, internal 120 O-rings (retrofits 213 O-ring style)3
M6	SOE flat closed end, external 226 O-rings (retrofits other manufacturers’ Code 6)3
M7	SOE fin end, external 226 O-rings (retrofits other manufacturers’ Code 7)3
M8	SOE fin end, external 222 O-rings (retrofits other manufacturers’ Code 5)3
M10	DOE, internal O-rings (fits other manufacturers’ housings)3
M11	SOE flat closed end, internal 120 O-ring (retrofits other manufacturers’ X style)3
M20	SOE with internal O-rings (same as M10), closed end with deep recess

Table 5

Code	Bubble test option
Blank	Sample bubble tested
B	100% bubble test

Table 6

Code	Packaging
Blank	Standard packaging
-BLK	Bulk packaging3

³ For details, contact Pall Corporation.