FILTRODISC® HT Modules
Modules for DEPTH Filtration
For high temperature applications in the chemical, pharmaceutical and food industry
Characteristics
Depth filter modules allow the user to handle large filter areas easily in a disposable assembly. Filtration is performed in a closed system. Depth filter sheets inside have a high particle load capacity of up to 4 kg per m2. In the filtration process, dirt particles are slowed down and eventually retained by the tortuous path inside the filter sheet and by electrokinetical interactions («zeta potential»). Through this unique mechanism, a high capacity (long lifetime of filter until plugging) can be achieved.
In addition to this proven technology the FILTRODISC® HT modules are specially designed for the filtration of high value liquids at high process temperatures
Dimensions
Modules are available in the following versions
| 12“ | 16“ | |
|---|---|---|
| Diameter [mm] | 290 | 400 |
| Filter area/module [m2] | 1.8 | 3.6 |
| Height (bayonet adapter) [mm] | 332 | 332 |
| Height (flat adapter) [mm] | 274 | 274 |
Filter area for modules with 16 cells. Modules with reduced number of cells are available upon request.
Adapter types
The FILTROX depth filter modules are available in all common adapter types:
- flat adapter (= DOE)
- bayonet adapter (= DOR = F)
Historically, the flat adapter is quite common.
The bayonet adapter is a safer alternative and for sterile filtration the
adapter of choice due to its double-o-ring sealing gaskets. The handling
of that adapter type is, in addition, much easier.
Rigid construction
The module consists of a polyamide (GF) backbone (rigid core) and
depth filter sheets on drainage bodies.
Function principle
The module is placed in a special housing. Turbid liquid fills the
space between the housing and the outside part of the module. The
liquid flows through the sheets where dirt particles are retained. The
clear liquid is drained through the inside of the drainage body and
the rigid core to the outlet of the filter housing.
Applications
The filtration work is done by the depth filter sheets, which are
available in a variety of porosities, from coarse, fine to germ reducing
and -removing filtration («sterile filtration»). FILTRODISC® HT
modules are recommended for applications with high demands on
temperature and chemical resistance.
Application examples:
- Synthesis products
- Heat transfer fluids
- Processing fluids
- Solvents
- Food products (oil, edible lactose, etc.)
FILTRODISC® HT modules are available with standard FIBRAFIX® or
high purity PURAFIX® filter sheets in a wide retention range. Sheets
with activated carbon are also available.
Retention rates of coarse and fine filtration sheets
The following nominal porosities (retention rates) are available:
| Type module |
Reten- tionrate [μm] |
Flowrate [l/m2min] Dp=1bar |
|
|---|---|---|---|
| AF03 | 35-15 | 2800-3600 | Coarse/Finefiltration |
| AF09 | 30-10 | 1500-2100 | Coarse/Finefiltration |
| AF15 | 20-8.0 | 960-1240 | Coarse/Finefiltration |
| AF23 | 15-6.0 | 560-700 | Coarse/Finefiltration |
| AF33 | 12-5.0 | 280-360 | Coarse/Finefiltration |
| AF43 | 9.0-4.0 | 240-300 | Coarse/Finefiltration |
| AF53 | 6.0-3.0 | 200-240 | Coarse/Finefiltration |
| AF73 | 3.0-1.5 | 170-210 | Germ-reducing/Sterilefiltration |
| AF103 | 1.5-0.6 | 100-120 | Germ-reducing/Sterilefiltration |
| AF113 | 0.8-0.5 | 68-80 | Germ-reducing/Sterilefiltration |
| AF133 | 0.6-0.4 | 45-56 | Germ-reducing/Sterilefiltration |
| AF143 | 0.4-0.2 | 26-34 | Germ-reducing/Sterilefiltration |
| AF153 | 0.2-0.04 | 10-16 | Germ-reducing/Sterilefiltration |
please find a converter to Gallons/sqft here:
Pore size in depth filter sheets is measured indirectly by the flow rate.
The correlation between pore size and flow rate is empirical.
Nominal pore sizes in this list are only values for orientation. The real
retention rate is depending on the nature of the dirt particles,
solvent and other factors and must be tested as a part of the method
development.
Operating conditions
Max. operating temperature (short period): ................................... 140° C
Max. operating temperature (continuous): ..................................... 110° C
Max. differential pressure (module): ...............................................2.5 bar
Recommended rinsing volume: .......................................................50 l/m2
Recommended temperature for steam sterilisation: ................... ....134° C
Note: For chemical sterilization with oxidizing agents do not exceed
recommended contact time. Inline steam sterilization requires careful
handling to avoid back pressure.
Chemical resistance (filter sheets)
| Substance |
Concentration [%] |
Resistance T=20°C |
T=80°C |
|---|---|---|---|
| NaOH | 1 | r | r |
| 2 | r | lr | |
| HCI | 5 | r | lr |
| HNO3 | 5 | r | lr |
| H2SO4 | 10 | r | lr |
| Acetic acid | Conc. | r | r |
| Citric acid | 10 | r | r |
| Peracetic | 0.1 | r | r |
| Butanol | 80 | r | r |
| Ethanol | 80 | r | r |
r = resistant; lr = limited resistant
For the complete list please refer to our special documentation
Chemical resistance (polyamide backbone)
| Substance |
Concentration [%] |
Resistance T=20°C |
|---|---|---|
| NaOH | 40 | r |
| Acetone | Conc. | r |
| Mineral oils | r | |
| Lubricants | r | |
| Diesel | Pure | r |
| Ethanol | Conc. | r |
| Toluene | Pure | r |
| Xylene | Pure | r |
| Formamide | Pure | lr |
| Boric acid | 10 | lr |
FILTROX quality assurance
FILTROX assures the best quality control according to international
standards:
-ISO 9001 (Quality management)
-ISO 14001 (Environmental management)
-FDA drug master file: #16418
External tests of lenticular modules and filter sheets were performed
and certified according to
– USP plastic class test VI (BSL, Munich)
other CFR requirements by the NAmSA
FILTROX is using polyamidoamine as a wet strength agent in its
filter sheets. The ISEGA Institute for food analysis in Aschaffenburg
(Germany) performed a test for extractable MCPD and DCP. The
FILTROX filter sheets extracts were below the detection limit of the
approved standard method for DCP and MCPD. The filter sheets are
free of GMO and common allergens. The backbone material of the
lenticular modules is polyamide.
Gasket material
Available material:
– Silicone (standard)
– EPDM
– Teflon® (encapsuled gaskets)
Material (filter sheets)
Purified and bleached cellulose, natural inorganic filter aid and
polyamidoamine (< 3%).
Diatomaceous earth
Sheets with an ash content > 1 contain diatomaceous earth (DE/
«Kieselguhr») or perlite as an inorganic filter aid. Filtro x uses only
natural kieselguhr with a cristobalite content < 1 % (detection limit).
pdf Download of Technical Info Sheet
Please download the technical info sheet from here.