Testing & Certification

Products manufactured by Medical Filtration Solutions Ltd are designed and manufactured in the UK using quality systems in accordance with BS EN ISO 13485:2016 and to the Medical Devices Directive 93/42 EEC. This means that Medical Filtration Solutions Ltd has CE Marking on all filters, please refer to our Declaration of conformity.


Individually Tested

Each filter is individually tested to BS EN ISO 23328-1 : 2008, for filter integrity and filtration efficiency during manufacture.


Independant Testing

Nelson Laboratories, Utah, USA have independently tested our filters for bacterial & viral efficiency,  testing is conducted using Bacteriaphage @ 25-27nm, a severe test for any filter.


Medical Filtration Solutions Ltd filters have been validated to remove the following bacteria and viruses.

  • Mycobacterium Tuberculosis
  • Hepatitis C & HIV (Hepatitis A, B & C, and TB have diameters above 27nm, HIV has a 110 nm diameter.)
  • Pseudomonas spp
  • Serratia marcescens


In this test efficiencies were >99.999% even after 24 hour water saturation.

Filters are manufactured in an Environmentally Controlled Area (ECA) to BS EN ISO 14644-1 : Cleanrooms and Associated Controlled Environments – Part1 : Classification of Air Cleanliness.

Regular testing is carried out by a third party which includes particle counts, microbial air counts using a Merck Air Sampler and surface counts using contact plates.


Device Classification for Filters

Unless varied to meet individual contract arrangements all devices are designed, procured, manufactured, inspected, supplied and serviced in accordance with provisions of the companies approved quality management system.

The chosen Quality System under which the devices are manufactured is BS EN ISO 13485 : 2016.

The products, if used for their intended purpose and in accordance with issued instructions, are unlikely to present any risk to health or safety of the patient, user or third parties. Based upon the devices description and functions as given above, historic operating experience and following a review of the criteria given in all rules of Annexes IX of the directive, Medical Filtration Solutions products are class I according to Rule 4.


Directives and Harmonised Standards

Technical standards, directives and codes applicable to the devices covered by this technical data are listed below.

Principle Directives and Harmonised Standards which relate to the Device are:-

Document TitleRefference No.Issue
Medical Devices Directive 93/42/EEC  1993

Medical devices – Quality management systems — Requirements for regulatory purposes. 

BS EN ISO 13485  2016

FDA Good Manufacturing Practice 

21 CFR 820  2014

Other principle standards, codes of practice, and specifications which relate to Medical Filtration Solutions Devices can be viewed here >>>

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