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Z.Plex* technology depth filter for reverse osmosis pre-filtration


Table 1: Specifications and performance information

Ratings 1, 5 microns (nominal)
Inner Diameter (nominal) 1 in (2.5 cm)
Outer Diameter 2.5 in (6.4 cm)
9 3/4 in (24.8 cm) 20 in (50.8 cm)
9 7/8 in (25.1 cm) 29 1/4 in (74.3 cm)
10 in (25.4 cm) 30 in (76.2 cm)
19 1/2 in (49.5 cm) 40 in (101.6 cm)
Longer lengths up to 70 in may be available upon request
Materials of Construction
Filter Media Polypropylene
Adapters Polypropylene
Elastomer Buna, EPDM, Silicone, Viton1, Santoprene2

(flat gasket only)

Performance Conditions
Maximum pressure drop:
35 psid (2.4 bar) @ 77°F (25°C)
Recommended change-out pressure drop:
20 psid (1.4 bar) @ 77°F (25°C)

Features and Benefits

  • Engineered specifically for reverse osmosis pretreatment and suitable for many pure water applications
  • Depth filter traps particles throughout the media
  • True depth media offers longer filter lifetime
  • Very low pressure drop and flow resistance
  • Thermally bonded construction and mel-bonded end adaption


  • Reverse osmosis pre-filtration for Veolia RO systems and universal equipment
  • Beverage
  • Electronics
  • Pre/post DI or active carbon

Efficiency Information

Table 2: Removal efficiency based on a modified ASTM 795 test procedure

Micron Rating Removal rating (µm) at various efficiencies
90.0% 99.0% 99.9%
1 µm Efficiency of nominal filters varies by application.

See note for information on nominal filter efficiency3



ROSave.Z filters are manufactured under a quality management system that has been certified to meet ISO 9001 standards. Each filter is assigned a lot code to ensure traceability of the data and materials used in the manufacturing process.

Table 3: Ordering information


  • U.S. FDA 21CFR 177.1520 food contact requirements
  • Article 3 of the EU Framework Regulation No. 1935/2004/EC safety requirements mbar
  • EU Plastics Regulation No. 10/2011 (may be used as intended in all compliant EU Member states)
  • USP class VI-121’C Plastics criteria
  • NSF 61 criteria
  • ISO 9001 criteria

Veolia filter cartridges are designed and manufactured for resistance to a wide range of chemical solutions. Conditions will vary with each application and users should carefully verify chemical compatibility. Please contact your Veolia representative for more information.

Ordering Information

*Trademark of Veolia; may be registered in one or more countries. ©2022 Veolia. All rights reserved. FS1097EN.docx Apr-20

Replace the numbers with your desired values from each column. Columns 3, 4, and 5 are optional depending on the desired configuration. Use “-B” if you would like bulk packaging.

Example: RO.Zs 05-40-XK-B

1 2 3 4 5
Type Micron Rating


Cartridge Length End #1 Adapter End #2 Adapter Elastomer Material
RO.Zs 01 = 1 µm

05 = 5 µm

9 3/4 in (24.8 cm)

9 7/8 in (25.1 cm)

E = 222 O-Ring

F = 226 O-Ring

L = Extended Core

X = Standard Plain End (no gasket)

Y = Flat Gasket

H = Fin

B = Buna


10 in (25.4 cm)

19 1/2 in. (49.5 cm)

K = Self Seal Spring

P = Santoprene2 (flat gasket only)

S = Silicone

20 in (50.8 cm)

29 1/4 in. (74.3 cm)

30 in. (76.2 cm)

40 in. (101.6 cm)

S = Solid End

X = Standard Plain End (no gasket)

V = Viton1
Longer lengths up to 70 in may be available upon request A picture containing invertebrate, mollusk  Description automatically generated Y = Flat gasket

1Viton (trademark of The Chemours Company)
2Santoprene (licensed to Advanced Elastomer Systems, L.P.)
3Absolute-rated filters have been designed and tested to reject at least 99% of particles of the listed micron size. Nominal-rated filters have a wider
distribution of pore sizes and therefore a wider distribution of rejected particle sizes. The nominal rating is primarily used to compare efficiencies
across a filter family and between filter manufacturers. Efficiency is dependent on particle shape, size, composition, application, and testing protocol.