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Description of Pharmaceutical Air Prefiltration
WECHANGE PP membrane filters are high efficiency depth type filters constructed entirely of chemically resistant polypropylene. They are economical, premium quality products that deliver consistently high filtration efficiency, superior flow rates, substantial dirt holding capacity, and exceptionally long service life. All-polypropylene construction makes it a cost-effective choice for clarification and prefiltration applications.
WECHANGE PP membrane filters are ideal for clarification, polishing, bioburden reduction and prefiltration applications. It is compatible with a wide range of chemicals and cleaning agents.
Application of Pharmaceutical Air Prefiltration
Features of Pharmaceutical Air Prefiltration
Operating Characteristic of Pharmaceutical Air Prefiltration
| Outer Diameter | 2.7”/69mm |
| Length | 10”/254mm 20”/508mm 30”/762mm 40”/1016mm 60”/1524mm |
| Pore Size | 1, 3, 5, 7, 10μm |
| Max. Operation Temperature | 80℃ |
| Max. Operation Pressure | Forward direction: 0.58 MPa(25±2℃) 0.24MPa(80±2℃) *It not recommend for reverse use |
| Food Contactability | All ingredients are compliant GB 4806.7-2016 |
| Filtration Areas | 5”≥0.34m²; 10”≥0.68m²; 20”≥1.36m² 30”≥2.04m²; 40”≥2.72m² |
| Integrity Testing | Bubble point≥60KPa 50KPa pressure, diffusion flow＜10 ml/min Anhydrous ethanol was used as the wetting solution at 25°C, and compressed air was used to test the bubble point values against the diffusion flows. |
| Sterilization | 30 times (121.4℃,30 min offline high-pressure steam sterilization) |
| Bacterial Retention Capacity | Minimum retention rate 107 CFU/cm2 The product was tested against Serratia marcescens (ATCC14756) using ASTM F838 method. |
| Extractable Substance | ＜50 mg/m2 After high-pressure steam sterilization(121.4℃,60 min), 25℃±2℃ immersing in pure water for 24h |
| Biosafety | The endotoxin level＜0.25 EU/ml, and the extraction solution has no acute toxicity |
| Cleanliness | No fibers or other visible foreign objects were detected in the filtered liquid. *Lamp test according to the Chinese Pharmacopoeia 2020 edition <0904> |
| Filtration direction | Outside-inside |
Flow Rate of Pharmaceutical Air Prefiltration
Material of Structure of Pharmaceutical Air Prefiltration
| Filter Media | Polypropylene |
| Deflector Layer | Polypropylene |
| Enclosures/Ports | High Temperature Resistance Polypropylene |
| Adapter | Polypropylene |
| Seals | Silicone/EPDM |
Naming Regulations of Pharmaceutical Air Prefiltration
| WF | PL | P | 0500 | 10 | A | S |
| Trademark | Form | Filtration Materials | Accuracy | length | Adapter | O ring |
| WECHANFIB | PLEATED | P PP | 0100 1um | 5 5” | A 222/ FIN | S Silicone |
| 0300 3um | 10 10” | B 222/Flat | E EPDM | |||
| 0500 5um | 20 20” | C 226/ FIN | V FKM | |||
| 0700 7um | 30 30” | D 226/ Flat | T PTFE | |||
| 1000 10um | 40 40” | E DOE |
| Wechange Pleated Filter Cartridge Products List | ||||||
| Membrane Material | Type No. | Application | Pore Size | Diameter | Length | Adaptor |
| μm | mm | inch | ||||
| PP | WF-PL-P-0100-05-* | Liquid Clarification, Liquid Filtration, Sewage Filtration, Security Filtration, Clarification Filtration, Beverage Pre Filtration, Microelectronic Liquid Pre Filtration, Photoresists Prefiltration, Organic Solvents Pre Filtration, Air Prefiltration. | 1 | 69 | 5" | The "*" Indicate type of CONNECTOR and SEAL RING, they're customizable and have below option codes: (Fluororubber) |
| PP | WF-PL-P-0100-10-* | 1 | 69 | 10" | ||
| PP | WF-PL-P-0100-20-* | 1 | 69 | 20" | ||
| PP | WF-PL-P-0100-30-* | 1 | 69 | 30" | ||
| PP | WF-PL-P-0100-40-* | 1 | 69 | 40" | ||
| PP | WF-PL-P-0300-05-* | 3 | 69 | 5" | ||
| PP | WF-PL-P-0300-10-* | 3 | 69 | 10" | ||
| PP | WF-PL-P-0300-20-* | 3 | 69 | 20" | ||
| PP | WF-PL-P-0300-30-* | 3 | 69 | 30" | ||
| PP | WF-PL-P-0300-40-* | 3 | 69 | 40" | ||
| PP | WF-PL-P-0500-05-* | 5 | 69 | 5" | ||
| PP | WF-PL-P-0500-10-* | 5 | 69 | 10" | ||
| PP | WF-PL-P-0500-20-* | 5 | 69 | 20" | ||
| PP | WF-PL-P-0500-30-* | 5 | 69 | 30" | ||
| PP | WF-PL-P-0500-40-* | 5 | 69 | 40" | ||
| PP | WF-PL-P-0700-05-* | 7 | 69 | 5" | ||
| PP | WF-PL-P-0700-10-* | 7 | 69 | 10" | ||
| PP | WF-PL-P-0700-20-* | 7 | 69 | 20" | ||
| PP | WF-PL-P-0700-30-* | 7 | 69 | 30" | ||
| PP | WF-PL-P-0700-40-* | 7 | 69 | 40" | ||
| PP | WF-PL-P-1000-05-* | 10 | 69 | 5" | ||
| PP | WF-PL-P-1000-10-* | 10 | 69 | 10" | ||
| PP | WF-PL-P-1000-20-* | 10 | 69 | 20" | ||
| PP | WF-PL-P-1000-30-* | 10 | 69 | 30" | ||
| PP | WF-PL-P-1000-40-* | 10 | 69 | 40" | ||
The PP pleated filter cores are made of high-quality polypropylene (PP) material, which boasts excellent chemical stability, heat resistance, and mechanical strength, making them suitable for the air pre-filtering requirements of the pharmaceutical industry. The PP material is recyclable, meets environmental protection standards, and reduces the impact on the environment.
1.Pure Reagent Filtration
2.High purity water filtration
3.Biological prefiltration
4.High precision, high concentration product filtration
* Depending on the application requirements, different filtration accuracies can be provided to meet the pharmaceutical industry's demands for air cleanliness;
* Special processing techniques are employed to give the filter core surface antibacterial properties, effectively inhibiting the growth of bacteria and microorganisms, ensuring the hygienic safety of the pharmaceutical production environment;
* The PP pleated filter core exhibits excellent pressure resistance, ensuring the stability of the filter's operation;
* Strict quality control system, complete production process flow;
* Short delivery period;
* Flexible payment method: T/T, L/C, West Union, Paypal;
* Free technical support;
* Other specific sizes can be customized;
Dimensions(nominal):
| OD | 69mm |
| Length | 10"(254mm),20"(508mm),30"(762mm) |
Material of Construction:
| Filter Media | Deflector layer | port | Enclosures/Ports | Seals Material |
| Polypropylene | Polypropylene | Polypropylene | Polypropylene | Silastic/EPDM |
Beer Clarification Filter Cartridge Performance:
| Max. Temperature | 80℃ |
| Max.Differential Pressure | 4.0 bar(21±2℃) 2.4 bar(80±2℃) |
| Effective Filtration area | ≥0.65 m²/ 10 inch ≥2.04 m²/ 30 inch |
| Integrity testing | Bubble point ≥60KPa 50KPa pressure,diffusion flow＜10 ml/min Anhydrous ethanol was used as the wetting solution at 25°C, and compressed air was used to test the bubble point values against the diffusion flows. |
| Steam Sterilization | Sterilized in-line at 85°C for 30 min. |
| Bacterial retention capacity | Minimum retention rate 107 CFU/cm2 The product was tested against Serratia marcescens (ATCC14756) using ASTM F838 method. |
| Extractable substance | ＜50 mg/m2 After autoclaving (123°C, 60 min), soak in purified water at 25°C ± 2°C for 24 hours. |
| Biosafety | Endotoxin less than 0.25 EU/ml, extracts not acutely toxic |
| 洁净度 | No fiber or other visible foreign matter was detected in the filtrate. Lamp test according to the Chinese Pharmacopoeia 2020 edition <0904>. |