Page 5 - BIOFIL

Point-of-use filters /

ANTI LEGIONELLA AND ALL GERM COMPONENT DISPOSAL
RANGE OF BIOFIL FILTERS STRATEGY
DELABIE offers a collection of BIOFIL water BIOFIL filters are classified as household waste.
filtering devices: tap and wall-mounted shower The outer packaging is made from recycled cardboard
filters, shower head filters and spout filters which is also fully recyclable.
BIOFIL filters are designed to deliver bacteriologically
controlled water at the point-of-use.
These devices retain bacteria, including waterborne HOLLOW FIBRE, AN INNOVATIVE,
opportunistic pathogenic micro-organisms such
as Legionella spp., Legionella pneumophila, TECHNICAL SOLUTION
Pseudomonas aeruginosa, non-tuberculous
Mycobacteria and other micro-organisms, thanks Hollow fibre micro-filtration
to a hollow fibre micro-filtration membrane with a There are two main types of membrane used
porosity of 0.1 m nominal-rated. This micro-filtration in point-of-use micro-filtration devices: flat membrane
technology guarantees a bacteriological quality or tubular membrane. Hollow fibre membrane
superior to that of the drinking water system without DELABIE chose to use hollow fibre tubular membrane
changing its chemical composition. filtration technology.
BIOFIL filters are designed to secure water delivery Porosity < 0.1 microns
at the point-of-use.
They are recommended for managing and preventing THE PRINCIPLE OF HOLLOW
so-called healthcare associated infections (HAIs). FIBRE FILTRATION

Hollow fibre filter
AREAS OF USE The BIOFIL filter is made up of a collection
of polyethylene hollow fibres grouped together
into a unit. The fibres are extremely fine and flexible,
Anti-Legionella and all-germ filters Microporous structure
BIOFIL 2, 3 and 4-month point-of-use filters provide with an outer diameter of 0.6mm and a thickness
a physical barrier to reduce the risk of infection of several tens of microns. < 0.1µm Bacteria
associated with waterborne micro-organisms. The fibres are hollow and shaped like a straw
The micro-filtration membrane provides protection (tubular).
for immunosuppressed and vulnerable people.
Microporous structure
Filters are necessary for the care of The hollow fibre membranes have multiple pores
immunosuppressed patients in high risk areas such which vary in size from 0.01 - 0.1 micron.
as bone marrow and organ transplant units, oncology, Each membrane consists of several surfaces with
intensive care, neonatal wards and any other area microporous structures (micro slits).
providing care for this type of patient. Bacteria and any particles in suspension
They also provide protection against the risk of that are larger than 0.1 micron are trapped External/internal frontal filtration
legionella and ensure compliance with regulations by these structures and are retained permanently
for users of public buildings. on the external surface of the membrane. Fibre Bacteria

External/Internal frontal filtration
NO CHEMICAL PRODUCTS DELABIE uses a frontal filtration system.
The water requiring treatment flows at right angles
to the filter surface and passes through the
No chemical products are used during the membrane due to the pressure difference on either
manufacture of our filters.
side of the membrane.
The water flows from the external to the internal
surface of the fibre.
TOTAL CONTROL OF THE
Bacteria and other microparticles that cannot pass
MANUFACTURING PROCESS through the gaps in the membrane structure
are retained on the outer surface and therefore Resin
100% quality controlled do not penetrate the membrane.
The fibre quality and porosity of the finished product
are continuously monitored during the manufacturing Filtration area/storage of bacteria Large filtration area
process for 100% of the fibres. The filter’s large hollow fibre filtration surface area Optimised bacteria storage
makes it possible to filter a larger volume of water.
Consequently the storage capacity for bacteria and
impurities trapped inside the filter is much greater.

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