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Qualitative Filter

Qualitative filter paper is essential in laboratories for routine filtration tasks, used primarily to identify and separate substances rather than for quantitative analysis. Made from cellulose, it is designed in various porosities and thicknesses to accommodate different sediment types, allowing for effective separation based on particle size. This filter paper is crucial for clarifying solutions, cleaning biological samples, and collecting precipitates for further examination. Its primary function is to permit the passage of liquids while capturing solid particles, facilitating preliminary tests and qualitative assessments in fields such as environmental science, chemistry, and clinical research. The simplicity, affordability, and efficiency of qualitative filter paper render it indispensable in numerous scientific applications, making it a fundamental tool for researchers and technicians across various disciplines.

Original price $17.07
Original price $17.07 - Original price $17.07
Original price $17.07
Current price $8.54
$8.54 - $8.54
Current price $8.54

Ahlstrom 6420-1250 Qualitative Filter Paper, Grade 642, 125 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $17.07
Original price $17.07 - Original price $17.07
Original price $17.07
Current price $8.54
$8.54 - $8.54
Current price $8.54
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Original price $9.01
Original price $9.01 - Original price $9.01
Original price $9.01
Current price $4.51
$4.51 - $4.51
Current price $4.51

Ahlstrom 6420-0550 Qualitative Filter Paper, Grade 642, 55 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $9.01
Original price $9.01 - Original price $9.01
Original price $9.01
Current price $4.51
$4.51 - $4.51
Current price $4.51
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Original price $9.51
Original price $9.51 - Original price $9.51
Original price $9.51
Current price $4.76
$4.76 - $4.76
Current price $4.76

Ahlstrom 6420-0700 Qualitative Filter Paper, Grade 642, 70 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $9.51
Original price $9.51 - Original price $9.51
Original price $9.51
Current price $4.76
$4.76 - $4.76
Current price $4.76
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Original price $20.73
Original price $20.73 - Original price $20.73
Original price $20.73
Current price $10.35
$10.35 - $10.35
Current price $10.35

Ahlstrom 6420-1500 Qualitative Filter Paper, Grade 642, 150 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $20.73
Original price $20.73 - Original price $20.73
Original price $20.73
Current price $10.35
$10.35 - $10.35
Current price $10.35
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Original price $555.40
Original price $555.40 - Original price $555.40
Original price $555.40
Current price $277.70
$277.70 - $277.70
Current price $277.70

Ahlstrom 6421-1250 Qualitative Filter Paper, Grade 642, 125 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $555.40
Original price $555.40 - Original price $555.40
Original price $555.40
Current price $277.70
$277.70 - $277.70
Current price $277.70
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Original price $9.51
Original price $9.51 - Original price $9.51
Original price $9.51
Current price $4.76
$4.76 - $4.76
Current price $4.76

Ahlstrom 6420-0750 Qualitative Filter Paper, Grade 642, 75 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $9.51
Original price $9.51 - Original price $9.51
Original price $9.51
Current price $4.76
$4.76 - $4.76
Current price $4.76
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Original price $122.93
Original price $122.93 - Original price $122.93
Original price $122.93
Current price $61.49
$61.49 - $61.49
Current price $61.49

Ahlstrom 6420-4000 Qualitative Filter Paper, Grade 642, 400 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $122.93
Original price $122.93 - Original price $122.93
Original price $122.93
Current price $61.49
$61.49 - $61.49
Current price $61.49
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Original price $14.24
Original price $14.24 - Original price $14.24
Original price $14.24
Current price $7.11
$7.11 - $7.11
Current price $7.11

Ahlstrom 6420-1100 Qualitative Filter Paper, Grade 642, 110 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $14.24
Original price $14.24 - Original price $14.24
Original price $14.24
Current price $7.11
$7.11 - $7.11
Current price $7.11
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Original price $490.16
Original price $490.16 - Original price $490.16
Original price $490.16
Current price $245.08
$245.08 - $245.08
Current price $245.08

Ahlstrom 6421-1100 Qualitative Filter Paper, Grade 642, 110 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $490.16
Original price $490.16 - Original price $490.16
Original price $490.16
Current price $245.08
$245.08 - $245.08
Current price $245.08
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Original price $188.33
Original price $188.33 - Original price $188.33
Original price $188.33
Current price $94.16
$94.16 - $94.16
Current price $94.16

Ahlstrom 6420-5000 Qualitative Filter Paper, Grade 642, 500 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $188.33
Original price $188.33 - Original price $188.33
Original price $188.33
Current price $94.16
$94.16 - $94.16
Current price $94.16
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Original price $13.41
Original price $13.41 - Original price $13.41
Original price $13.41
Current price $6.71
$6.71 - $6.71
Current price $6.71

Ahlstrom 9090-0900 Qualitative Filter Paper Wet-Strengthened, Grade 909, 90 mm

Ahlstrom
In stock

Qualitative Filter Paper Wet-Strengthened

Original price $13.41
Original price $13.41 - Original price $13.41
Original price $13.41
Current price $6.71
$6.71 - $6.71
Current price $6.71
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Original price $30.24
Original price $30.24 - Original price $30.24
Original price $30.24
Current price $15.11
$15.11 - $15.11
Current price $15.11

Ahlstrom 6420-1850 Qualitative Filter Paper, Grade 642, 185 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $30.24
Original price $30.24 - Original price $30.24
Original price $30.24
Current price $15.11
$15.11 - $15.11
Current price $15.11
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Original price $32.78
Original price $32.78 - Original price $32.78
Original price $32.78
Current price $16.39
$16.39 - $16.39
Current price $16.39

Ahlstrom 6420-2050 Qualitative Filter Paper, Grade 642, 205 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $32.78
Original price $32.78 - Original price $32.78
Original price $32.78
Current price $16.39
$16.39 - $16.39
Current price $16.39
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Original price $46.23
Original price $46.23 - Original price $46.23
Original price $46.23
Current price $23.13
$23.13 - $23.13
Current price $23.13

Ahlstrom 6420-2400 Qualitative Filter Paper, Grade 642, 240 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $46.23
Original price $46.23 - Original price $46.23
Original price $46.23
Current price $23.13
$23.13 - $23.13
Current price $23.13
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Original price $17.07
Original price $17.07 - Original price $17.07
Original price $17.07
Current price $8.54
$8.54 - $8.54
Current price $8.54

Ahlstrom 9090-1250 Qualitative Filter Paper Wet-Strengthened, Grade 909, 125 mm

Ahlstrom
In stock

Qualitative Filter Paper Wet-Strengthened

Original price $17.07
Original price $17.07 - Original price $17.07
Original price $17.07
Current price $8.54
$8.54 - $8.54
Current price $8.54
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Original price $46.23
Original price $46.23 - Original price $46.23
Original price $46.23
Current price $23.13
$23.13 - $23.13
Current price $23.13

Ahlstrom 6420-2500 Qualitative Filter Paper, Grade 642, 250 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $46.23
Original price $46.23 - Original price $46.23
Original price $46.23
Current price $23.13
$23.13 - $23.13
Current price $23.13
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Original price $55.60
Original price $55.60 - Original price $55.60
Original price $55.60
Current price $27.81
$27.81 - $27.81
Current price $27.81

Ahlstrom 6420-2700 Qualitative Filter Paper, Grade 642, 270 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $55.60
Original price $55.60 - Original price $55.60
Original price $55.60
Current price $27.81
$27.81 - $27.81
Current price $27.81
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Original price $88.67
Original price $88.67 - Original price $88.67
Original price $88.67
Current price $44.34
$44.34 - $44.34
Current price $44.34

Ahlstrom 6420-3200 Qualitative Filter Paper, Grade 642, 320 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $88.67
Original price $88.67 - Original price $88.67
Original price $88.67
Current price $44.34
$44.34 - $44.34
Current price $44.34
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Original price $88.67
Original price $88.67 - Original price $88.67
Original price $88.67
Current price $44.34
$44.34 - $44.34
Current price $44.34

Ahlstrom 6420-3300 Qualitative Filter Paper, Grade 642, 330 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $88.67
Original price $88.67 - Original price $88.67
Original price $88.67
Current price $44.34
$44.34 - $44.34
Current price $44.34
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Original price $116.90
Original price $116.90 - Original price $116.90
Original price $116.90
Current price $58.45
$58.45 - $58.45
Current price $58.45

Ahlstrom 6420-3850 Qualitative Filter Paper, Grade 642, 385 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $116.90
Original price $116.90 - Original price $116.90
Original price $116.90
Current price $58.45
$58.45 - $58.45
Current price $58.45
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Original price $153.90
Original price $153.90 - Original price $153.90
Original price $153.90
Current price $76.95
$76.95 - $76.95
Current price $76.95

Ahlstrom 6420-4500 Qualitative Filter Paper, Grade 642, 450 mm

Ahlstrom
In stock

Qualitative Filter Paper

Original price $153.90
Original price $153.90 - Original price $153.90
Original price $153.90
Current price $76.95
$76.95 - $76.95
Current price $76.95
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Original price $12.44
Original price $12.44 - Original price $12.44
Original price $12.44
Current price $6.24
$6.24 - $6.24
Current price $6.24

Ahlstrom 9090-0425 Qualitative Filter Paper Wet-Strengthened, Grade 909, 42.5 mm

Ahlstrom
In stock

Qualitative Filter Paper Wet-Strengthened

Original price $12.44
Original price $12.44 - Original price $12.44
Original price $12.44
Current price $6.24
$6.24 - $6.24
Current price $6.24
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Original price $12.44
Original price $12.44 - Original price $12.44
Original price $12.44
Current price $6.24
$6.24 - $6.24
Current price $6.24

Ahlstrom 9090-0470 Qualitative Filter Paper Wet-Strengthened, Grade 909, 47 mm

Ahlstrom
In stock

Qualitative Filter Paper Wet-Strengthened

Original price $12.44
Original price $12.44 - Original price $12.44
Original price $12.44
Current price $6.24
$6.24 - $6.24
Current price $6.24
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Original price $12.77
Original price $12.77 - Original price $12.77
Original price $12.77
Current price $6.38
$6.38 - $6.38
Current price $6.38

Ahlstrom 9090-0700 Qualitative Filter Paper Wet-Strengthened, Grade 909, 70 mm

Ahlstrom
In stock

Qualitative Filter Paper Wet-Strengthened

Original price $12.77
Original price $12.77 - Original price $12.77
Original price $12.77
Current price $6.38
$6.38 - $6.38
Current price $6.38
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