Testing provides security. Throughout
the development and design stage all Air Safety products undergo
stringent testing by internationally recognised Camr Porton Down,
Nelson Laboratories, USA, and/or University Hospital Wales –
Medical Devices Agency, as well as ongoing in-house testing.
Camr (Centre for Applied
Microbiology and Research) Porton Down: 24 Hour Test
Measures efficiency and resistance
of a new filter against a known air flow and volume of viable micro-organisms
(Bacillus subtilis var niger, 0.7um – 1.0 um for bacterial
test; MS-2 coliphage, 0.02um for viral challenge). The filter is
then subjected to 98% Relative Humidity for 24 hours to simulate
the effect and duration of clinical use, and then re-tested. The
efficiency of the filter should be the same or better, whilst the
resistance should not dramatically increase.
Nelson Laboratories, Utah,
USA
Carry out BFE and VFE tests at increased
challenges
University Hospital Wales,
Medical Devices Agency: 24 Hour Test
Assesses the likely affect of an
Hme (heat moisture exchange) filter during clinical use by measuring
Hme weight to assess resistance to gas flow; moisture output, and
time taken to reach maximum efficiency.
In-house Testing to BS3928