LOFTOP
Absolute filtercartridges

The demand for industrial filtration continues to increase, driven by greater requirements for product purity. LOFTOP absolute filtercartridges are FILTERMAT's response to these requirements. LOFTOP absolute filtercartridges have been developed for such demanding applications.

LOFTOP absolute filtercartridges are made of 100% high purity polypropylene micro fibers. Micro fibers are blown onto the center core. The meltblown process eliminates the requirement to use binders or additives.

LOFTOP absolute filtercartridges do not release any fibers. DOE and SOE cartridges equipped with a FPM O-ring adapter are silicon free.

 
Typical applications / types of usage :
 
Pharmaceutical - Protection of membrane cartridges. Filtration of extracts
Electronic - Pure water, DI water (pre-filtration), R.O. water (pre-filtration), photo resins, acids, bases, semi-conductors
Film and photo - Photo resist resins, film lacquers, developer, emulsion, magnet dispersion
Food and beverages - Mineral water, beer, wine, fruit juice, milk, edible oils
Cosmetics - Mouth wash, perfume, lotion, shampoo
Automotive - E-coats
Surface finishing - Coolants, plating liquids
Others - Chemicals, paper coatings, printing inks, solvents, resins, lacquers, condensate recycling
 

LOFTOP Absolute filter cartridges :

  • 100 % pure polypropylene
  • no added adhesives
  • excellent chemical compatibility
  • biologically and chemically inert
  • controlled pore size
  • steam sterilization, autoclave
  • efficiency rating ß-ratio 5000
  • open pore structure
  • high structural stability
  • high dirt load capacity
  • no fiber release

Technical data :

  • filter fineness : 0,5 - 120 µm
  • length : 5" - 40"
  • connections : DOE and SOE with O-ring adapter
  • fiber material : pure polypropylene micro fibers manufactures according to FDA requirements (§ 177.152), thermally bonded on a polypropylene core
  • all material conforms to USP XXIII Class VI plastics requirements
  • temperature resistance : 80°C permanent (121°C steam sterilization)
  • max. diffeential pressure : 4,0 bar at 25°C
       
Efficiency > 99.98 % (ß-ratio 5000)      
       
ß-Value efficiency rating

LOFTOP absolute filtercartridges are subject to stringent quality control processes. They are regularly tested for their ß-value. The table below gives the filter efficiencies at given ß-values :

 
 
ß-5000
ß-1000
ß-100
LT-10-0,5-A
0,5
<0,5
<0,5
LT-10-1-A
1
0,5
<0,5
LT-10-3-A
3
2
1
LT-10-5-A
5
4
3
LT-10-10-A
10
9
8
LT-10-20-A
20
18
15
LT-10-30-A
30
26
22
LT-10-50-A
50
40
31
LT-10-70-A
70
60
55
LT-10-90-A
90
80
77
LT-10-120-A
120
110
100
These results have been obtained according to OSU-F-2, ISO-4402 and ISO-4752 under laboratory conditions.
 
Pressure drop (delta-P)
 

The table below details the pressure drop-flow rate characteristics of LOFTOP cartridges flowing water at 20°C. Flow rate is stated as flow per 10" length. For fluids of other viscosities, multiply the indicated delta-P by the fluid viscosity in centipoise.

 
 
 
Dirt holding capacity
 

LOFTOP absolute filtercartridges utilize a graded fibre structure capable of achieving high dirt loading characteristics. The highest holding capacities are in the outer layers due to high pore volumes, preventing blinding of the cartridge surface.
 
 
Dirt holding capacity (g/10")
LT-10-0,5-A
66
LT-10-1-A
68
LT-10-3-A
70
LT-10-5-A
70
LT-10-10-A
70
LT-10-20-A
70
LT-10-30-A
70
LT-10-50-A
70
LT-10-70-A
94
LT-10-90-A
360
LT-10-120-A
360
All tests were performed in water at 20°C with a flow rate of 7,5 l/min/10" length using coarse test dust at an inlet concentration of 1,2 g/l to a final delta-P of 2,7 bar. In other conditions, dirt capacity can vary significantly from these results.
 
Recommended efficiency flow rates
 
Filtration efficiency and particle holding capacity are dependent on viscosity, filter efficiency and flow rate. For optimum results we recommend the following flow rates :
 
Viscosity in mPas
 
1 (H2O)
50
100
500
LT-10-0,5-A
8
1
0,6
-
LT-10-1-A
9
1,5
1
-
LT-10-3-A
10
2,5
1,8
1
LT-10-5-A
12
4
2,7
1,5
LT-10-10-A
14
8
5,4
3
LT-10-20-A
20
12
8
4
LT-10-30-A
30
14
9
4,3
LT-10-50-A
45
16
10
4,5
LT-10-70-A
50
18
11
5
LT-10-90-A
>50
18
11
5
LT-10-120-A
>50
18
11
5
   

Choice of end caps / adapters :

LOFTOP absolute filtercartridges come standard as DOE (double open end) versions. In addition they are available with common end caps / adapter with O-ring for FILTERMAT cartridge vessels and other systems. All end caps / adapters are made of polypropylene (FDA-types).

 

    

Lengths :

  • 05" (127 mm)
  • 10" (254 mm)
  • 20" (508 mm)
  • 30" (762 mm)
  • 40" (1016 mm)

Diameter :

  • outer dia. 64 mm
  • inner dia. 27 mm

Sealing materials :

  • version G : polypropylene
  • version 2, 3+4 : Silicone rubber (standard), FPM
  

Packing units :

  • length 05" = 60 pcs
  • length 10" = 30 pcs
  • length 20"-30"-40" = 15 pcs

Box sizes :

  • 05"-10"-20" = 33x20x53 cm
  • 30" = 33x20x78 cm
  • 40" = 30x20x104 cm
   

Optional versions :

For operating temperatures up to 100°C LOFTOP filtercartridges can be equipped with a stainless steel core.
         
DOE
DOE
SOE 226
SOE 222
SOE 222

(standard) without flat gaskets

polypropylene flat gaskets

2 O-rings and bayonet spear
2 O-rings and flat
2 O-rings and spear
         
LT
-
10
-
30
-
A
-
G
Loftop
  
Length
  
Filter fineness µm
  
Absolute eff. ß-ratio 5000
  
End caps / adapters (not valid for DOE standard)
   
10"
  
0,5 - 1 - 3 - 5 - 10 -25 - 50 - 75 - 100 - 150
       G (DOE foamed flat gaskets)
   
20"
         2 (SOE 222 O-rings, spear)
   
30"
           3 (SOE 226 O-rings, bayonet/spear)
   
40"
           4 (SOE 222 O-rings, flat)
                2V, 3V, 4V = with FPM O-rings
Telephone +32-3-711.03.57 or +32-3-710.65.50
Fax +32-3-711.03.58 or +32-3-710.65.58
Address Winninglaan 17, B-9140 Temse (Belgium)
Email info@filtermat.be
Website www.filtermat.be