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Cartridge Filters & Housings
Spun-Bonded Range
 These cartridges
are of a pure polypropylene construction, using FDA approved
materials, which meet NSF Standard 58, with the manufacturing
process being ISO 9000 certified. More importantly, in the UK,
Osmonics Spun-Bonded are WRC listed.
The one-step manufacturing patented process employed by Osmonics
continuously extrudes and thermally bonds pure polypropylene
micro-fibres into a complex filter matrix. Micro-filaments plus
precise control maximise the positive filtration characteristics
of graded density, tight micron cut-offs and maximum void area
with millions of tortuous paths. This manufacturing process assures
consistent quality, filter-to-filter, year-in and year-out.
True Depth Filtration
Many cartridges claim to be depth filters but to be a true
depth filter a cartridge must be able to retain contaminants
throughout the entire cross section of the filter. The complete
Osmonics Spun-Bonded range are true depth filters, hence higher
dirty holding capacity resulting in improved life.
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True depth filter
Note the high dirt holding from outer to inner.
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Rolled depth filter
Note surface blinding, hence low dirt holding.
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| Purtrex |
- Long-life, low-cost, additive free
- 60°C
- Polyproplyene only
Fileder's most popular cartridge meets the requirements of
most non-critical applications as well as serving as an economic
pre-filter. Purtrex is the latest Osmonics' development to use
their patented blown microfibre technology. This range of pure
polypropylene, surfactant-free depth filters, with exceptional
dirt-holding capabilities, has become the next-generation replacement
product to string-wound and wrongly-specified resin-bonded cartridges.
The result is exceptional value for general applications where
long-life, high-purity and low change-out frequency are required.
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| Hytrex
II |
- Incorporated in Osmonics own system
- 60°C
- Polyproplyene only
The Osmonics' Hytrex II cartridge is recognised in industry
throughout the world as the original spun-bonded filter. Having
evolved over the years as technology allows, Hytrex II offers
clear advantages over Purtrex in certain applications, with 20%
more polypropylene, which creates a longer and cleaner manufacturing
process and provides 15% greater efficiency. As an indication
of this ionic cleanliness, rinsing to 18 megohm is achieved in
under 12 minutes, approximately half the time of Purtrex (note
- standard string-wound and resin-bonded cartridges cannot reach
this standard). Hytrex II also has obvious benefits with its
packaging - including clear-case identification and each element
being embossed with its code - reducing the risk of installation
error.
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| Selex |
- Consistent filtration, high dirt holding, low-cost, clean
- 60°C
- Polyproplyene only
Selex is the most technically advanced spun-bonded filter
cartridge manufactured by Osmonics. For critical filtration applications
that require greater particle selectivity, Selex uses microfibre
up to 70% smaller than was previously possible. The result is
a highly-efficient (99%+) long-life cartridge with a sharp cut-off
for process applications requiring clarifying separation. Selex's
cleanliness is the best of the spun-bonded trio, with an 18 megohm/cm
water stream returning to 18 megohm/cm in under 4 minutes, having
passed through a new filter. Selex is, like Hytrex II, embossed
with its product code.
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For more information please contact Derwent Water
Services
Derwent Water Services - Cost-Effective Water Treatment
Solutions
Derwent Water Services - For All Your Water Treatment
Plant Needs
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