High efficiency mechanical filter
- Validated for the retention of SARS-CoV-2
- Pleated hydrophobic filter medium
- High efficiency retention of airborne bacterial and viral contamination
- 100 % retentive for liquid-borne contamination
- Compatible with drug nebulization
- Simplified logistics due to possible application at patient end or at machine end
- Individually tested for integrity and efficiency before release
Product Features
High level of protection:
The Pall Ultipor 50 has been validated to retain aerosolized bacteria at > 99.999 % and viruses at > 99.995 % efficiency1. When challenged with the SARS-CoV-2 virus it showed a > 99.999 % retention efficiency2. Its hydrophobic filter medium is a 100 % barrier to liquid-borne contamination3. The Pall Ultipor 50 will therefore provide an outstanding level of protection against contamination and infection for patients, staff, equipment and the environment.Versatile application:
When used at patient end in anaesthesia it is indicated for the prevention of cross infection via breathing systems. In this position it will protect breathing systems from patient derived contamination, allowing for their extended use in conjunction with a hospital protocol that ensures hygienic and mechanical integrity of the system. The Ultipor 50 filter is also indicated for machine side use on anaesthesia and critical care ventilators, water bath humidifiers and other medical gas equipment (e.g. oxygen concentrators, nebulisers) where the connector fittings comply to ISO 5356-1. Under certain conditions of use in dry gases (e.g. when used in conjunction with a patient end HME), extended use beyond 24 h may be permitted.Compatible with nebulization:
Medications can be nebulized between the filter and the patient, protecting the expiratory breathing circuit limb and the expiratory parts of the ventilator against potentially harmful effects of drug aerosols.
Pall Total Quality and Performance Guarantee
Each Ultipor® 50 Breathing System Filter is individually tested before production release forFilter Integrity – Assuring housing and seal quality and intactness
Filtration Efficiency – Assuring filter media quality, performance and intactness by using a non-destructive test.
A Product Validation Certificate that is batch and customer specific can be provided to show details of testing and validation. This is the customer’s guarantee of 100 % reliability, performance in use and assurance of protection of breathing systems and equipment, patients and staff.
References:
1. Spiers S. Testing of the Pall Ultipor 50 for the retention of aerosolized bacteria and viruses and the penetration of NaCl particles to ISO 23328-1:2003. Pall SLS Technical Report 2021
2. Spiers S., Quarti C. Filtration Efficiency of the Pall Ultipor 50 for SARS-CoV-2. Pall SLS Technical Report 2021
3. Spiers S. Testing of the Pall Ultipor® 50 for hydrophobicity and liquid-borne bacterial retention. Pall SLS Technical Report 2021
Filter medium:
Pleated hydrophobic filter mediumFiltration efficiency liquid-borne bacteria:
100 %3Retention of SARS-CoV-22:
> 99.999 %Bacterial retention efficiency1:
> 99.999 %Viral retention efficiency1:
> 99.995 %Filtration efficiency for NaCl particles tested as per ISO 23328-11:
- > 99.96 % dry
- > 99.99 % after 24 h conditioning in humid gases
Resistance to airflow4:

The Ultipor® 50 keeps a low level of flow resistance over its entire life when tested in accordance with ISO 9360-1
Materials of Construction:
Transparent blue polypropylene housingPleated hydrophobic glass fibre medium
Thermoplastic polymer
Connectors (ISO 5356-1):
Patient end: 22 mm OD/15 mm IDMachine end: 22 mm ID
Filter volume:
approximately 50 mLFilter weight:
approximately 42 gRecommended use:
24 hr change. Use may be extended if used in dry gases at machine side. Single patient use only at patient side.References:
1. Spiers S. Testing of the Pall Ultipor 50 for the retention of aerosolized bacteria and viruses and the penetration of NaCl particles to ISO 23328-1:2003. Pall SLS Technical Report 2021
2. Spiers S., Quarti C. Filtration Efficiency of the Pall Ultipor 50 for SARS-CoV-2. Pall SLS Technical Report 2021
3. Spiers S. Testing of the Pall Ultipor® 50 for hydrophobicity and liquid-borne bacterial retention. Pall SLS Technical Report 2021
4. Spiers S. Testing of the Pall Ultipor 50 to ISO 9360- 1:2000: HME Pressure Drop, Leakage and Compliance. Pall SLS Technical Report 2021
Reorder Code | Description | Packaging |
U50 | Ultipor® 50 Breathing System Filter | 50 filters/case, individually packed |
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