Glass Fiber Filters

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Glass Fiber Filters

Glass Fiber Filters

• Highly resistant to chemical attack, biologically inert
• Autoclavable
• Thermostable: Can be used up to 500°C for non-binder type.
• Store indefinitely: Unaffected by humidity

APPLICATIONS
• Use as a prefilter to extend membrane life
• Water/air pollution analysis
• Liquid clarification

ORDERING INFORMATION
Size
DP-70
GA-55
GA-100
GA-200
GB-100R
GB-140
GC-50
GC-90
GD-120
GF-75
GS-25
Quantity/package
21–150 mm
diameter discs
50
100
100
50
100
100
100
100
50
100
100
300 x 300 mm sheets
10
10
10
10
10
10
10
10
10
10
10

Available in discs in the following diameters (mm): 21, 24, 25, 26, 37, 45, 47, 55, 70, 90, 110, 125, 150.
Order by specifying first the grade of filter then the diameter, e.g. GC-50 90mm, GA-55 47mm.


SPECIFICATIONS : GLASS /QUARTZ FIBER FILTERS
Grade
Applications/Characteristics
Weight (g/m2)
Thickness (mm)
Nominal Rating (µm)
Water Flow Time*1 (sec)
Collection Efficiency (%, 0.3 µm DOP)
Pressure Drop (kPa at
5 cm/sec)
Binder*
Maximum Operating Temperature (°C)
Conversion
Whatman
ex-Schleicher & Schuell
Pall
Millipore
Ahlstrom
GA-55
  • Thin filter recommended for clarifying filtration.
  • Air pollution monitoring.
55
0.21
0.6
23
99.9
0.33
None
500
GF/A (934AH)
31
 
APFA
111
GF-75
  • Highest collection efficiency grade offered.
  • Collection of very fine particles.
75
0.35
0.3
84
99.999
1.67
None
500
GF/F
20
 
GFCP
151
GA-100
  • Faster filtration speed recommended for filtering viscous fluids.
110
0.44
1.0
11
96
0.20
None
500
 
 
 
 
 
GA-200
  • Thick filter with high dust holding capacity recommended for filtering viscous fluids.
175
0.74
0.8
15
99.9
0.35
None
500
 
 
 
 
 
GB-100R
  • High and low volume aerosols for airborne dust and metal contaminants
  • Low trace metal contents
95
0.38
0.6
15
99.99
0.30
None
500
EPM2000
1HV
A/E (Use for air)
AP40
 
GB-140
  • High dust holding capacity recommended for SS (Suspended Solid) analysis.
140
0.56
0.4
58
99.99
1.11
None
500
GF/B
32
 
APFB
121
GC-50
  • Thin filter with high collection efficiency Prefilter for membrane filter
  • Scintillation counting
48
0.19
0.5
28
99.99
0.52
None
500
GF/C
30/25
A/E (Use for water)
AP40/ APFC
131
GC-90
  • Filter with organic binder recommended for fine particles and aerosols.
  • Prefilter for membrane filter.
100
0.30
0.5
20
99.99
0.42
Organic
120
 
 
 
AP15
 
GD-120
  • Medium collection efficiency grade
  • Prefilter for membrane filter
123
0.51
0.9
14
97
0.17
None
500
GF/D
40
 
APFD
141
GS-25
  • Filter with organic binder recommended for SS (Suspended Solid) analysis.
  • Higher strength and lower released fibers compared with no-binder grades.
70
0.21
0.6
15
99.9
0.32
Organic
120
-
 
 
AP20
164
DP-70
  • Filter with organic binder recommended for high concentrated liquid of protein and other substances.
  • Prefilter for membrane filter.
170
0.52
0.6
20
-
0.52
Organic
120
-
 
 
AP25
 
QR-200
  • Thick quartz fiber filter with inorganic binder Low adsorption
  • Monitor airborne particulates.
200
1.0
-
-
99.9
0.34
Inorganic
1,000
 
 
 
 
 
QR-100
  • Quartz fiber filter without binder
  • Superior chemical resistance does not adsorb acid gases.
85
0.38
-
-
99.99
0.45
None
1,000
QM-A
 
Micro Quartz
 
 
*1. Flow time is the time in seconds to filter 1,000 mL of distilled water at 20 °C under differential pressure of 39 kPa through a 9.6 cm 2 section of filter.
*Binder 1. Organic – Acrylic Acid Ester Emulsion. 2. Inorganic – Alumina

 

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