DN66PC/N66PC Sterilizing-Grade Liquid Filter
Cobetter DN66PC/N66PC series filter cartridges are made of naturally hydrophilic nylon 66 membranes, which are modified with positively-charged N66 membranes to absorb and remove particles, bacteria and endotoxins that are smaller than the filter pore size.
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Description
Features
- Naturally hydrophilic
- The use of modified positively-charged N66 membranes removes endotoxins from water, absorbing particles and endotoxins smaller than the filter membrane pore size.
- Good integrity and high bubble point values ensure excellent sterilization and particle removal efficiency
- Low pressure drop, high flow rates, long-life
Applications
- Sterile filtration for LVP, SVP and antibiotic solutions
- Sterile filtration of saline and other solvents
- Filtration of pharmaceutical water and removal of pyrogens
- Pharmaceutical sterile filtration
- Solvent filtration
- Alkaline solution filtration
Quality
- 100% Integrity testing in manufacturing
- Each filter is fully traceable with unique serial number
- Manufactured in a facility which adheres to ISO 9001:2015 Practices
Evaluation of Endotoxin Absorption Efficiency

Flow Rate Characteristics

Specifications
Materials of Construction
Membrane | Nylon 66 |
Support | Polypropylene (PP), polyester (PET) |
Core/Cage/End Caps | Polypropylene (PP) |
End Cap Inserts | Polybutylene terephthalate (PBT) |
Seal Material | Silicone / EPDM / Viton FEP/ PFA encapsulated O-rings |
Operating Conditions
Max. Operating Temperature |
80°C |
Max.Operating Pressure |
0.69 MPa@25°C 0.40 MPa@60°C 0.24 MPa@80°C |
Max. Differential Pressure (Forward) |
0.69 MPa@25°C 0.40 MPa@60°C 0.24 MPa@80°C |
Max. Differential Pressure (Reverse) |
0.30 MPa@25°C 0.10 MPa@80°C |
Filtration Area
Outer Diameter | Membrane Pore Size | Area/10" | |
DN66PC | 69 mm | 0.22+0.22 μm | 0.58 m² |
69 mm | 0.45+0.22 μm | 0.68 m² | |
71 mm | 0.45+0.22 μm | 0.82 m² | |
69 mm | 1.2+0.45 μm | 0.84 m² | |
N66PC | 69 mm | 0.22 μm | 0.65 m² |
Integrity Test Standards @10inch,20°C (DN66PC)
Membrane Pore Size | Bubble Point | Air Diffusion |
0.22+0.22 μm | ≥ 0.30 MPa (water), Air test | ≤ 16 ml/min @ 0.275 MPa (water) |
0.45+0.22 μm(outer diameter 69mm) | ≥ 0.30 MPa (water), Air test | ≤ 20 ml/min @ 0.275 MPa (water) |
0.45+0.22 μm(outer diameter 71mm) | ≥ 0.30 MPa (water), Air test | ≤ 24 ml/min @ 0.275 MPa (water) |
1.2+0.45 μm | ≥ 0.12 MPa (water), Air test | ≤ 18 ml/min @ 0.1 MPa (water) |
Integrity Test Standards @10inch,20°C (N66PC)
Membrane Pore Size | Bubble Point | Air Diffusion |
0.22 μm | ≥ 0.30 MPa, Wetted with water, Air test | / |
Bacterial Retention
Model | Content |
69DN66PC 0.22+0.22 μm | Bacterial quantitative retention of 10⁷ cfu/cm² Brevundimonas diminuta (ATCC 19146) accordingto ASTM F838 methodology. |
69DN66PC 0.45+0.22 μm | |
71DN66PC 0.45+0.22 μm | |
69DN66PC 1.2+0.45 μm | Bacterial quantitative retention of 10⁷ cfu/cm² Serratia marcescens (ATCC14756) according to ASTM F838 methodology |
N66PC 0.22 μm | Bacterial quantitative retention of 10⁷ cfu/cm² Brevundimonas diminuta (ATCC 19146) accordingto ASTM F838 methodology. |
Sterilization
In-line steam sterilization | Up to 10 cycles (121 °C for 30 minutes and differential pressure <30KPa per cycle ) |
Regulatory Compliance
- Autoclaved filter effluent meets the USP<788> requirement of particulate matter in large volume injection.
- Component materials meet the criteria for a "Non-fiber-releasing filter" as defined in 21 CFR 210.3(b)(6).
- Aqueous extraction from a cartridge contains less than 0.25EU/ml as determined by Limulus Amebocyte Lysate (LAL), meeting requirements of USP<85>.
- Meet the requirement of USP <87> In Vitro Cytotoxicity Test.
- Component materials meet the requirements of the current USP<88> for plastic class VI-121°C.
- All component materials meet the FDA Indirect Food Additive requirements cited in 21 CFR 177-182.
- Based on the current information from our suppliers, all component materials used in the manufacture of this product are animal-free.
End Cap

Ordering Information
DN66PC (Double-layer)
Outer Diameter | Type | Membrane Pore Size | End Cap | Nominal Length | Seal Material | Industry |
69mm | DN66PC | 0022 0.22 µm | DOE Double Open End | 05 5 inch | S Silicone | P |
71 71mm | 2222 0.22+0.22 µm | HTF 222/Fin (PBT insert) | 10 10 inch | E EPDM | ||
4522 0.45+0.22 µm | HSF 226/Fin (PBT insert) | 20 20 inch | V Viton | |||
1245 1.2+0.45 µm | HTCG 222/Flat (PBT insert) | 30 30 inch | P FEP/PFA encapsulated O-rings | |||
HSCG 226/Flat (PBT insert) | 40 40 inch |
N66PC (Single-layer)
Outer Diameter | Type | Membrane Pore Size | End Cap | Nominal Length | Seal Material | Industry |
69mm | N66PC | 0022 0.22 µm | DOE Double Open End | 05 5 inch | S Silicone | P |
71 71mm | 0045 0.45 μm | HTF 222/Fin (PBT insert) | 10 10 inch | E EPDM | ||
0120 1.2 μm | HSF 226/Fin (PBT insert) | 20 20 inch | V Viton | |||
HTCG 222/Flat (PBT insert) | 30 30 inch | P FEP/PFA encapsulated O-rings | ||||
HSCG 226/Flat (PBT insert) | 40 40 inch |
* Example:DN66PC2222DOE05SP (DN66PC,0.22+0.22µm,Double open end,5 inch,Silicone,Pharmaceutical)