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Qualitative Filter Paper

Qualitative filter paper is filter paper that is often made from cellulose fiber. It is a laboratory product used to detect substances contained in samples to be analyzed in scientific experiments. It is generally round, but there are also square products. Since there are variations in thickness, filtration speed, and dimensions, selection is possible according to the application. The filtration speed changes according to the fineness of the eyes, so when filtering relatively large precipitates such as iron hydroxide, when filtering fine things with large eyes and fast filtration speed, such as barium sulfate. It ’s a good idea to choose one that has a fine eye and slow filtration speed.

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  1. Round Qualitative Filter Paper No.1
    ADVANTEC Round Qualitative Filter Paper No.1
    Among the qualitative filter papers, it is a filter paper with a high filtration rate. Suitable for filtering coarse precipitates such as iron hydroxide. It corresponds to one type specified in JIS P 3801 [Filter paper (for chemical analysis)]. The raw material is α-cellulose (pure cellulose with... Read More
    Ash  0.10%  Thickness (mm)  0.2  Operating pH Range  0～12  Specification  1 packaging: 100 sheets  Maximum Operating Temperature (℃)  120  Drainage Time (s)  45  Particle Retention Capacity (μm)  6  Burst Strength (kPa)  79  Water Absorption (cm)  9  Mass (g/m2)  90  JIS Standard  JIS P 3801 Class 1 
    Rating:
    97%
    (6)
    from S$7.99
    Min. 2 days
  2. Qualitative Filter Paper No.1
    Artec Qualitative Filter Paper No.1
    Most often used for general purposes.
    Particle Retention Capacity (μm)  6 
    Rating:
    93%
    (6)
    from S$4.29
    Min. 2 days
  3. Circular Hard Filter Paper No.4A
    ADVANTEC Circular Hard Filter Paper No.4A
    Since the surface of the filter paper is hardened by chemical treatment, the paper quality is tough and the surface is smooth, and there is almost no fiber detachment. Suitable for pressurization and vacuum filtration. It is relatively resistant to acids and alkalis and repairs fine precipitates.... Read More
    Ash  0.025%  Thickness (mm)  0.12  Operating pH Range  0～14  Particle Retention Capacity (μm)  1  Maximum Operating Temperature (℃)  120  Burst Strength (kPa)  224  Water Absorption (cm)  4.0  Drainage Time (s)  915  Mass (g/m2)  96  JIS Standard  JIS P 3801 4 types 
    from S$17.99
    Min. 2 days
  4. Qualitative filter paper No.2
    ADVANTEC Qualitative filter paper No.2
    The raw material is cellulose fiber with 99% or more of α-cellulose. It is commonly used in qualitative analyses that retain the precipitate well and require precision.
    Ash  0.1%  Thickness (mm)  0.26  Operating pH Range  0～12  Maximum Operating Temperature (℃)  120  Burst Strength (kPa)  122  Mass (g/m2)  125  Particle Retention Capacity (μm)  5  Water Absorption (cm)  8  break strength, when wet (kPa)  8  Drainage Time (s)  80  JIS Standard  JIS P 3801 Type 2 
    from S$5.69
    Min. 2 days
  5. Qualitative Filter Paper No.1
    ADVANTEC Qualitative Filter Paper No.1
    The raw material is cellulose fiber with 99% or more of α-cellulose. It has a high filtration rate and is suitable for filtering coarse precipitates such as iron hydroxide.
    Ash  0.1%  Thickness (mm)  0.2  Operating pH Range  0～12  Maximum Operating Temperature (℃)  120  Drainage Time (s)  45  Particle Retention Capacity (μm)  6  break strength, when wet (kPa)  7  Burst Strength (kPa)  79  Water Absorption (cm)  9  Mass (g/m2)  90  JIS Standard  JIS P 3801 Class 1 
    Rating:
    100%
    (1)
    from S$4.79
    Min. 2 days
  6. Qualitative Filter Paper
    KENIS Qualitative Filter Paper
    Rating:
    100%
    (1)
    from S$3.89
    Min. 14 days
  7. Filter Paper for Water Absorption No.26-WA
    ADVANTEC Filter Paper for Water Absorption No.26-WA
    Water-absorbing filter paper No.26-WA is a smooth, highly water-absorbent filter paper made of pure cellulose fibers. Suitable for suction paper for hand-made paper test specified in TAPPI (Technical Association of the Pulp and Paper Industry) T205. * Water absorption: The height of water that ri... Read More
    Thickness (mm)  0.7  Water Absorption (cm)  11  Maximum Operating Temperature (℃)  120  Mass (g/m2)  325 
    from S$97.99
    Min. 2 days
  8. Double Ring Qualitative Filter Paper MEDIUM102
    GE Healthcare Double Ring Qualitative Filter Paper MEDIUM102
    You can select filter paper with specifications equivalent to JIS standards 1 to 3. Widely used for detection and identification of substances contained in samples. A product lineup that supports filtration from coarse particles such as colloidal precipitates to fine precipitates. Suitable for fi... Read More
    Thickness (μm)  158  Basis Weight (g/m2)  80.0±4.0  Retained Particle Size (μm)  About 10  JIS Standard  JIS P 3801 2 class equivalent  Ash content (%)  ≦0.11  Filtration speed  ＞35to≦70(s) 
    from S$4.79
    Min. 5 days
  9. Qualitative Filter Paper # 2
    Whatman Qualitative Filter Paper # 2
    Compared to Grade 1, it features high retention and high absorbency. The filtration rate will be slightly slower. As an example of use that makes the best use of absorbency, it can also be used to retain soil nutrients during plant growth tests. It can also be used to monitor certain impurities i... Read More
    Ash  0.06%  Thickness (mm)  0.19  Quantity (Sheets)  100  JIS Standard  2 types equivalent  Drainage Time (s)  55 (initial)  Particle Retention Capacity (μm)  8  Mass (g/m2)  97  Specification  Domestic filter paper equivalent No.2  Suitable Products  Domestic filter paper: No.2 
    from S$14.99
    Min. 2 days
  10. Qualitative Filter Paper No.42 (Circle)
    Whatman Qualitative Filter Paper No.42 (Circle)
    Filter Paper  42  Filter Paper No.  5C (Similar domestic number)  Type  Round 
    from S$33.99
    Min. 16 days
  11. Qualitative Filter Paper
    AS ONE Qualitative Filter Paper
    Material  cellulose 
    from S$6.49
    Min. 2 days
  12. Qualitative Filter Paper
    AS ONE Qualitative Filter Paper
    Filter Paper  102  Mass (g/m2)  80±4  Material  cellulose 
    from S$6.49
    Min. 4 days
  13. Quantitative filter paper No.6
    ADVANTEC Quantitative filter paper No.6
    The raw material is cellulose fiber with 99% or more of α-cellulose. Pure cellulose fibers are treated with hydrochloric acid and hydrogen fluoride to reduce the distribution content to a low level of about 0.01%, enabling accurate quantitative analysis. It is commonly used as a quantitative filt... Read More
    Ash  0.01%  Thickness (mm)  0.2  Operating pH Range  0～12  Mass (g/m2)  103  break strength, when wet (kPa)  12  Maximum Operating Temperature (℃)  120  Particle Retention Capacity (μm)  3  Drainage Time (s)  300  Burst Strength (kPa)  49  Water Absorption (cm)  6  JIS Standard  JIS P 3801 6 types 
    from S$139.90
    Min. 8 days
  14. Qualitative filter paper (AZUMI) NO.2
    NARIKA Qualitative filter paper (AZUMI) NO.2
    Filtration Accuracy (μm)  5 
    from S$5.39
    Min. 6 days
  15. Qualitative Filter Paper No102
    Whatman Qualitative Filter Paper No102
    from S$4.59
    Min. 5 days
  16. Whatman Qualitative Filter Paper
    KENIS Whatman Qualitative Filter Paper
    A general-purpose filter paper used to detect and identify substances contained in samples. Detection and identification of substances contained in the sample
    from S$13.99
    Min. 25 days
  17. Qualitative filter paper QL-B
    SANSYO Qualitative filter paper QL-B
    Particle Retention Capacity (μm)  15～20  Filtration speed  35 to 70 (Herzberg) (seconds)  Mass (g/m2)  80±4  Ash  ≦0.15% 
    from S$6.89
    Min. 6 days
  18. Qualitative filter paper QL-A
    SANSYO Qualitative filter paper QL-A
    Filtration speed  <35 (Herzberg) (seconds)  Particle Retention Capacity (μm)  20～25  Mass (g/m2)  80±4  Ash  ≦0.15% 
    from S$4.59
    Min. 6 days
  19. Qualitative filter paper QL-C
    SANSYO Qualitative filter paper QL-C
    Particle Retention Capacity (μm)  10～15  Filtration speed  70-140 (Herzberg) (seconds)  Mass (g/m2)  80±4  Ash  ≦0.15% 
    from S$4.59
    Min. 6 days
  20. Round Qualitative Filter Paper No.2
    ADVANTEC Round Qualitative Filter Paper No.2
    Among the qualitative filter papers, it is a thick filter paper with a high filtration rate. A filter paper commonly used in qualitative analysis that retains sediment well and requires precision. It corresponds to the two types specified in JIS P 3081 [Filter paper (for chemical analysis)]. The ... Read More
    Ash  0.10%  Thickness (mm)  0.26  Operating pH Range  0～12  Specification  1 packaging: 100 sheets  Maximum Operating Temperature (℃)  120  Burst Strength (kPa)  122  Mass (g/m2)  125  Particle Retention Capacity (μm)  5  Water Absorption (cm)  8  Drainage Time (s)  80  JIS Standard  JIS P 3801 Type 2 
    Rating:
    94%
    (16)
    from S$8.99
    Min. 2 days
  21. Round Qualitative Filter Paper No.131
    ADVANTEC Round Qualitative Filter Paper No.131
    The paper quality is hard and strong. A filter paper that can also be used for decompression and pressurization. For finer sediments (barium sulfate, etc.) than No.2.
    Thickness (mm)  0.25  Specification  1 packaging: 100 sheets  Mass (g/m2)  140  Drainage Time (s)  240 
    Rating:
    80%
    (5)
    from S$14.99
    Min. 2 days
  22. Qualitative Filter Paper # 1
    Whatman Qualitative Filter Paper # 1
    A filter paper grade widely used for general qualitative filtration analysis. Medium particle retention and flow velocity. Removal of precipitates (impurities) from solution (eg sulfate, calcium oxalate (heated), calcium carbonate) Agricultural field: Soil analysis, seed inspection Food field: Se... Read More
    Grade  #1  Ash content (%)  0.06  Thickness (mm)  0.18  Particle Retention Capacity (μm)  11  Basis Weight (g/m2)  88  JIS Standard  Class 1 (JISP3801) equivalent  Suitable Products  Domestic filter paper: No.1  Load capacity  Medium  Filtration speed  Medium speed (40s / 100mL) 
    Rating:
    100%
    (1)
    from S$11.99
    Min. 2 days
  23. Square filter paper (square filter paper)
    Azumi Filter Paper Square filter paper (square filter paper)
    ● Rectangular filter paper that can be used in a variety of applications, from battery testing to water blotting. Cut to suit your application.
    Grade  No.1 (general purpose)  Dimensions (cm)  15×20 
    Rating:
    80%
    (1)
    from S$17.99
    Min. 2 days
  24. Quantitative Filter Paper No.5C
    ADVANTEC Quantitative Filter Paper No.5C
    The raw material is cellulose fiber with 99% or more of α-cellulose. Pure cellulose fibers are treated with hydrochloric acid and hydrogen fluoride to reduce the distribution content to a low level of about 0.01%, enabling accurate quantitative analysis. Suitable for filtering fine precipitates.
    Ash  0.01%  Thickness (mm)  0.22  Operating pH Range  0～12  Particle Retention Capacity (μm)  1  Mass (g/m2)  118  break strength, when wet (kPa)  12  Maximum Operating Temperature (℃)  120  Drainage Time (s)  570  Water Absorption (cm)  6  Burst Strength (kPa)  92  JIS Standard  JIS P 3801 Class 5 C 
    from S$14.99
    Min. 2 days
  25. Circular qualitative filter paper No.101
    ADVANTEC Circular qualitative filter paper No.101
    The property is close to No. 1, and it is a crepe-like filter paper with unevenness on the paper surface. For filtration of viscous liquid and rapid filtration.
    Water Retention (g/cm2)  0.026  Thickness (mm)  0.21  Drainage Time (s)  50  Mass (g/m2)  80 
    Rating:
    60%
    (1)
    from S$9.89
    Min. 2 days
  26. Quantitative filter paper No.5A
    ADVANTEC Quantitative filter paper No.5A
    The raw material is cellulose fiber with 99% or more of α-cellulose. Pure cellulose fibers are treated with hydrochloric acid and hydrogen fluoride to reduce the distribution content to a low level of about 0.01%, enabling accurate quantitative analysis. It has a high filtration rate and is suita... Read More
    Ash  0.01%  Thickness (mm)  0.22  Operating pH Range  0～12  break strength, when wet (kPa)  10  Maximum Operating Temperature (℃)  120  Drainage Time (s)  60  Burst Strength (kPa)  61  Particle Retention Capacity (μm)  7  Water Absorption (cm)  9.5  Mass (g/m2)  97  JIS Standard  JIS P 3801 Class 5 A 
    from S$14.99
    Min. 2 days
  27. Square qualitative filter paper No.2
    ADVANTEC Square qualitative filter paper No.2
    The paper quality is thick and the filtration speed is fast. A qualitative standard product that holds well the sediment.
    Ash  0.1%  Thickness (mm)  0.26  Operating pH Range  0～12  Specification  1 packaging: 100 sheets  Maximum Operating Temperature (℃)  120  Burst Strength (kPa)  122  Mass (g/m2)  125  Particle Retention Capacity (μm)  5  Water Absorption (cm)  8.0  Drainage Time (s)  80  Remark  For standard qualification  JIS Standard  JIS P 3801 Type 2 
    from S$199.90
    Min. 2 days
  28. Double Ring Qualitative Filter Paper FAST101
    GE Healthcare Double Ring Qualitative Filter Paper FAST101
    You can select filter paper with specifications equivalent to JIS standards 1 to 3. Widely used for detection and identification of substances contained in samples. A product lineup that supports filtration from coarse particles such as colloidal precipitates to fine precipitates. Suitable for fi... Read More
    Thickness (μm)  174  Retained Particle Size (μm)  25-40  Basis Weight (g/m2)  80.0±4.0  JIS Standard  JIS P 3801 1 class equivalent  Ash content (%)  ≦0.11  Filtration speed  ≦35(s) 
    from S$5.99
    Min. 2 days
  29. Kiriyama Rohto Filter Paper
    KIRIYAMA GLASS Kiriyama Rohto Filter Paper
    We have filter papers for Kiriyama funnels with diameters that match each funnel.
    from S$9.59
    Min. 13 days
  30. Semi-micro filter paper # 1
    Whatman Semi-micro filter paper # 1
    It is the size of qualitative filter paper grade 1 cut into small pieces.
    from S$38.99
    Min. 2 days
  31. Qualitative Filter Paper No.41 (Circle)
    Whatman Qualitative Filter Paper No.41 (Circle)
    Filter Paper  41  Filter Paper No.  5A (Similar domestic number)  Type  Round 
    from S$33.99
    Min. 2 days
  32. Qualitative Filter Paper # 4
    Whatman Qualitative Filter Paper # 4
    Suitable for filtering coarse particles and gelatinous precipitates (eg iron hydroxide, aluminum hydroxide). Due to its high filtration rate, it can be easily used for sample purification when analyzing extracts containing biological fluids and organic substances. In air pollution monitoring, thi... Read More
    Quantity (Sheets)  100 
    from S$19.99
    Min. 5 days
  33. Qualitative Filter Paper No.4 (Circle)
    Whatman Qualitative Filter Paper No.4 (Circle)
    Filter Paper No.  101 (similar domestic number)  Filter Paper  4  Type  Round 
    from S$28.99
    Min. 4 days
  34. Qualitative Filter Paper No.2
    Artec Qualitative Filter Paper No.2
    It can also hold fine particles.
    Particle Retention Capacity (μm)  5 
    from S$8.49
    Min. 21 days
  35. Quantitative filter paper No.5B
    ADVANTEC Quantitative filter paper No.5B
    The raw material is cellulose fiber with 99% or more of α-cellulose. Pure cellulose fibers are treated with hydrochloric acid and hydrogen fluoride to reduce the distribution content to a low level of about 0.01%, enabling accurate quantitative analysis. Suitable for filtration of precipitates fo... Read More
    Ash  0.01%  Thickness (mm)  0.21  Operating pH Range  0～12  Mass (g/m2)  108  break strength, when wet (kPa)  12  Maximum Operating Temperature (℃)  120  Drainage Time (s)  195  Particle Retention Capacity (μm)  4  Water Absorption (cm)  7  Burst Strength (kPa)  75  JIS Standard  JIS P 3801 Class 5 B 
    from S$14.99
    Min. 4 days
  36. Membrane Filter (Cellulose Ester, Sterilized)
    AS ONE Membrane Filter (Cellulose Ester, Sterilized)
    Sterilized in convenient individual packaging.
    Diameter (mm)  47  Material  Cellulose mixed ester  Surface  Plain  Color  White  Specification  γ-ray sterilized (individually packaged) 
    Rating:
    90%
    (2)
    from S$119.90
    Min. 2 days
  37. Double Ring Qualitative Filter Paper SLOW103
    GE Healthcare Double Ring Qualitative Filter Paper SLOW103
    You can select filter paper with specifications equivalent to JIS standards 1 to 3. Widely used for detection and identification of substances contained in samples. A product lineup that supports filtration from coarse particles such as colloidal precipitates to fine precipitates. Suitable for fi... Read More
    Thickness (μm)  150  Basis Weight (g/m2)  80.0±4.0  Retained Particle Size (μm)  About 3  JIS Standard  JIS P 3801 3 class equivalent  Ash content (%)  ≦0.11  Filtration speed  ＞70to≦140(s) 
    from S$9.79
    Min. 2 days
  38. Silica filter paper QR series
    ADVANTEC Silica filter paper QR series
    It does not contain an alumina binder and has excellent collection efficiency and dust repair ability.
    Thickness (mm)  0.38  Maximum Operating Temperature (℃)  1000  Mass (g/m2)  85  Type  QR-100 
    from S$119.90
    Min. 4 days
  39. Qualitative Filter Paper
    AS ONE Qualitative Filter Paper
    Filter Paper  103  Mass (g/m2)  80±4  Material  cellulose 
    from S$6.49
    Min. 4 days
  40. Silica filter paper
    ADVANTEC Silica filter paper
    Silica (SiO2) Made from fine fibers with a purity of 99% or higher. QR-200 is reinforced with an alumina binder to prevent clogging.
    Thickness (mm)  0.38  Pressure Loss (kPa)  0.45  Operating Temperature Range (℃)  1000  Mass (g/m2)  85  Grade  QR-100 
    from S$119.90
    Min. 4 days
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