Page 19 - Healthcare

Point-of-use filters /

ANTI-LEGIONELLA AND ALL-GERM HOLLOW FIBRE, AN INNOVATIVE,
RANGE OF BIOFIL FILTERS TECHNICAL SOLUTION

DELABIE offers a collection of BIOFIL water Hollow fibre microfiltration POINT-OF-USE FILTERS
filtering devices: tap or wall-mounted shower There are two main types of membrane used
filters, shower head filters and spout filters in point-of-use microfiltration devices: flat membrane
BIOFIL filters are designed to deliver bacteriologically or hollow fibre membrane.
controlled water at the point-of-use. DELABIE chose to use the hollow fibre membrane
These devices retain bacteria, including waterborne filtration technology.
opportunistic pathogenic microorganisms such
as Legionella spp., Legionella pneumophila, THE PRINCIPLE OF HOLLOW 
Pseudomonas aeruginosa, non-tuberculous
Mycobacteria and other microorganisms, thanks FIBRE FILTRATION
to a hollow fibre microfiltration membrane with a
porosity of 0.1μm nominal-rated. This microfiltration Hollow fibre filter
technology guarantees a bacteriological quality The BIOFIL filter is made up of a collection of Hollow fibre membrane
superior to that of the drinking water system without polyethylene hollow fibres grouped together into
changing its chemical composition. a unit. The fibres are extremely fine and flexible,
BIOFIL filters are designed to secure water delivery with an outer diameter of 0.6mm and a thickness Porosity < 0.1 microns
at the point-of-use. of several tens of microns.
They are recommended for managing and preventing The fibres are hollow and shaped like a straw
so-called healthcare associated infections (HAIs). (tubular).

Microporous structure
The hollow fibre membranes have multiple pores
AREAS OF USE 
which vary in size from 0.01 - 0.1 micron.
Each membrane consists of several surfaces with
Anti-Legionella and all-germ filters microporous structures (micro slits). Microporous structure
BIOFIL 2, 3 & 4-month point-of-use filters provide Bacteria and any particles in suspension that
a physical barrier to reduce the risk of infection are larger than 0.1 micron are trapped by these < 0.1µm Bacteria
associated with waterborne microorganisms. structures and are retained permanently on the
The microfiltration membrane provides protection external surface of the membrane.
for immunosuppressed and vulnerable people.
External/Internal frontal filtration
Filters are necessary for the care of DELABIE uses a frontal filtration system.
immunosuppressed patients in high risk areas such The water requiring treatment flows at right angles
as bone marrow and organ transplant units, oncology, to the filter surface and passes through
intensive care, neonatal wards and any other area the membrane due to the pressure difference
providing care for this type of patient. on either side of the membrane.
They also provide protection against the risk of External/internal frontal filtration
Legionella and ensure compliance with regulations The water flows from the external to the internal
for users of public buildings. surface of the fibre. Fibre Bacteria
Bacteria and other microparticles that cannot pass
through the gaps in the membrane structure are
TOTAL CONTROL OF THE retained on the outer surface and therefore do not
penetrate the membrane.
MANUFACTURING PROCESS
Filtration area/storage of bacteria
100% quality controlled The filter’s large hollow-fibre filtration surface area
The fibre quality and porosity of the finished product makes it possible to filter a larger volume of water.
are continuously monitored during the manufacturing Consequently the storage capacity for bacteria and
process for 100% of the fibres.
impurities trapped inside the filter is much greater.

Resin
COMPONENT DISPOSAL
STRATEGY
Large filtration area
BIOFIL filters are classified as household waste. Optimised bacteria storage
The outer packaging is made from recycled cardboard
which is also fully recyclable.

Point-of-use filters 17