Nexis® A Series Filter Cartridges

Nexis A filter cartridges are ideal for use in rigorous food and beverage clarification processes.  Pall’s proprietary CoLD^™ (Co-Located Large Diameter) fiber technology gives the Nexis A filters internal support combined with high dirt holding capacity. 

The Nexis A filter cartridges provide a removal efficiency of  >99.9 % with consistent filtration performance. Continuous graded and fixed pores provide pre-and fine filtration within the same cartridge resulting in lower overall filtration and disposal cost.

These cartridges are an ideal choice for food and beverage processes needing high-performance filtrationat an economical price.

For detailed information about this product, please refer to the data sheet. (To download this data sheet, select Download PDF from the menu above.)

Products in this datasheet may be covered by one or more patents, including EP 830,191; US 5,591,335; US 5,653,833; US 5,681,469; US 5,690,782; US 5,730,820; US 5,733,581; US 5,741,395; US 5,783,011.

Performance Specifications

Filter Grades (>99.9% Retention Rating by ASTM F-795 Test):
0.5, 1, 3, 5, 10, 20, 30, 40, 50, 70, 90, 120 µm

Maximum Differential Pressure:

0.5 - 20 µm:	15 psid (1.03 bard) @ 180°F (82°C) 25 psid (1.72 bard) @ 150°F (66°C) 60 psid (4.14 bard) @ 86°F (30°C)
30 - 120 µm:	25 psid (1.72 bard) @ 140°F (60°C) 50 psid (3.45 bard) @ ambient

Recommended Change Out Differential Pressure¹:
35 psid (2.4 bard)

FDA Listed Materials:
Manufactured from materials, which are listed for food contact
applications in Title 21 of the U.S. Code of Federal Regulations.
Product (5 micron and higher) in compliance with EU Directive
2002/72/EC for plastic in food contact (in simulants A, B, C, and D). 

Toxicity:
All polypropylene components meet the specifications for biological
safety as per the USP for Class VI-121°C plastics (gaskets/O-rings excluded).

Purity:
Nexis A Series filter cartridges are free of adhesives, binders, resins and silicone.

Rinse-Up:
Rinse-up to 18 Megohm-cm with a minimum of throughput.

Autoclaving:
Single open end Nexis Series filter cartridges can be autoclaved
for 30 minutes at 250°F (121°C) under no end load conditions.
However, filter cartridges should be allowed to cool to normal
system operating temperatures prior to use.

Steam Sterilization:
Not recommended.

Product Specifications

Materials of Construction:

Filter Media:	Polypropylene
Hardware:	Polypropylene
Gaskets/O-rings:	Silicone Elastomer, EPDM, Viton2 A, Buna N, Santoprene3 (DOE only), FEP, FEP Encapsulated Silicone, FEP Encapsulated Viton A

Dimensions (nominal)

Outside Diameter:	2 1/2" (6.4 cm)
Lengths:	4" (10.2 cm), 5" (12.7 cm), 9 3/4" (24.8 cm), 9 7/8" (25.1 cm), 10" (25.4 cm), 19 1/2" (49.5 cm), 20" (50.8 cm), 29 1/4" (74.3 cm),  30" (76.2 cm), 39" (99.1 cm),  39 1/2" (100.3 cm), 40" (102 cm)

Liquid Retention Ratings (µm) (by ASTM F-795 Test)

Cartridge Designation	99.9% Efficiency	90% Efficiency
NXA 0.5	0.5	< 0.5
NXA 1	0.95	0.65
NXA 3	2.8	1.5
NXA 5	4.1	3.4
NXA 10	9.5	4.7
NXA 20	18.5	13
NXA 30	27	18
NXA 40	36	20
NXA 50	46	27
NXA 70	65	42
NXA 90	85	55
NXA 120	105	65

Nexis A Series filter cartridge retention 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 medium.
Fine test dust is used as the test contaminant for filters in
the 0.5 to 20 micron range. Coarse test dust is used for
micron ratings above 20 micron. Additional information can
be obtained by contacting Pall Corporation.

¹ Provided that the maximum differential pressure is not exceeded based on temperature limits defined above.

² Registered trademark of DuPont Dow.

³ Registered trademark of Advanced Elastomer Systems.

Typical Flow vs. Differential Pressure for Application Sizing

Flow rate is per 10" (25.4 cm) cartridge. For liquids other than water, multiply the pressure drop by the fluid viscosity in centipoise.

NXA  - U -     (e.g., NXA 5-10U-DOES)

Code	Filter Grades
0.5	0.5 µm
1	1 µm
3	3 µm
5	5 µm
10	10 µm
20	20 µm
30	30 µm
40	40 µm
50	50 µm
70	70 µm
90	90 µm
120	120 µm

 

Code	Cartridge Lengths (nominal)
4	4"
5	5"
9.75	9.75"
9.875	9.875"
10	10"
19.5	19.5"
20	20"
29.25	29.25"
30	30"
39	39"
39.5	39.5"
40	40"

 

Code	End Configurations
Blank	DOE industrial (no endcaps)
1X	DOE industrial, 1" (2.54 cm) extended core
M3	SOE flat closed end, external 222 O-rings (retrofits other manufacturers’ Code 0)4
M3H	SOE large diameter closed end, external 222 O-rings
M4	SOE fin end, external 222 O-rings with  locking tab
M5	DOE, internal 120 O-rings (retrofits 213 O-ring style)4
M6	SOE flat closed end, external 226 O-rings (retrofits other manufacturers’ Code 6)4
M7	SOE fin end, external 226 O-rings (retrofits other manufacturers’ Code 7)4
M8	SOE fin end, external 222 O-rings (retrofits other manufacturers’ Code 5)4
M10	DOE, internal O-rings (fits other manufacturers’ housings)4
M11	SOE flat closed end, internal 120 O-ring (retrofits other manufacturers’ X style)4
M18	SOE flat closed end, external 222 O-ring
M20	SOE, internal O-ring (same as M10), closed end with deep recessess
DOE	DOE with elastomer gasket seals & end caps
H21	DOE, Santoprene gasket seal
DOE-1X	DOE with elastomer gasket seal, 1" (2.54 cm) extended core
H21-1X	DOE with Santoprene gasket seal, 1" (2.54 cm) extended core

 

Code	Gasket/O-ring Materials
S	Silicone
N	Buna N
E	EPDM
V	Viton A
T	Expanded PTFE (gaskets)
T	FEP Encapsulated Silicone (O-rings)
F	FEP Encapsulated Viton A (O-rings)
Y	Santoprene

⁴ For details, contact Pall