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          General Lab

          Qualitative Cellulose Filter Papers

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          Product description

          Qualitative cellulose filter papers perform separation by entrapping particulate within the random matrix of cellulose fibers within the depth of the media. This media is widely used in methods requiring the determination and identification of particulate in both liquids and gas. Also, this natural fiber filter paper is commonly used to clarify liquid samples.

          Qualitative grade applications and descriptions:

          CFP1 grade
          Very widely used filter media demonstrating retention of approximately 11 µm and medium flow rate. Used in a broad range of laboratory and environmental applications, this media is ideally suited in separating lead sulfate, calcium carbonate and calcium oxalate precipitates. This media is the standard for agricultural procedures such as soil and seed sample testing. Also, it is commonly used as a separation media in the food and beverage industry to extract liquids from solid samples.

          Due to the consistent bright white color of this media, it is ideal for photometric stain intensity measurement of air samples. The media can also be impregnated with reagents for use in quantifying optical reflectance in gas detection procedures.
          CFP2 grade
          A more retentive and absorbent media than CFP1, with approximately  8 µm and a medium to slow flow rate. This media is ideal for general filtration and absorbent conveyance. Commonly used in plant growth trials and monitoring pre-isolated contaminants in air and gas.
          CFP4 grade
          The fastest flow rate demonstrated by any of the qualitative cellulose filter medias resulting in a low retention rate of approximately 25 µm. Very commonly used as the first media in a multi-stage filtration process. Ideally suited for use in organic extractions and biological fluid separation processes. Often specified in air monitoring applications where the entrapment of fine particulate is not required.
          CFP5 grade
          Filtration of very fine particulate and clarification with applications in environmental sciences and chemical analysis.
          CFP200 grade
          Pure cotton 1-5 micron retention, slow flow, smooth surface.
          CFP201 grade
          Pure cotton 7-14 micron, medium flow, smooth surface.
          CFP202 grade
          Cotton with strengthening agent, 15-19 micron retention, medium-fast flow, crepe surface.
          CFP226 grade
          Cotton with strengthening agent, 20-25 micron retention, fast flow, crepe surface.
          CFP230 grade
          Cotton with strengthening agent, 30 micron retention, very fast flow, crepe surface.
          CFP802 grade
          Cotton with strengthening agent, 15 micron retention, fast flow, crepe surface, fluted folds.

          Terms

          Use the terms below to help you select the type of filter paper that will best meet your needs.

          Furnish The raw materials used in the manufacture of the wet laid product.
          Ash content Dry method, determined in exposure at 900°C air in muffle furnace.
          Retention Nominal retention of particulate at 98% efficiency in liquid.
          Flow Liquid flow rate speed relative to other comparable products listed in this product alignment.
          Basis weight Nominal weight of material per meter2 indicated “gram weight” unit of measure at 8% moisture.
          Thickness As measured under 4 PSI using TAPPI method T411.
          Flat/fluted Flat stock is supplied as sheets, rolls or die cut parts. Fluted is 1/4 or 1/2 quadrant funnel folding.
          Surface Stated as relative to comparable products listed in this product alignment.
          Brightness Stated as relative to comparable products listed in this product alignment.

          Ordering information

          Cat. No. Description Furnish AshContent (%) Retention Flow Basis Weight(g/m2) Thickness (mm) Flat/Fluted Surface Brightness
          Qualitative filter papers
          CFP1 grade
          CHFP1159 4.25cm 11 micron Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CHFP1160 5.5cm 11 micron Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CHFP1161 7cm 11 micron Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CHFP1162 9cm 11 micron  Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CHFP1163 11cm 11 micron   Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CHFP1164 12.5cm 11 micron   Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CHFP1165 15cm 11 micron   Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CHFP1166 18.5cm 11 micron   Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CHFP1168 24cm 11 micron   Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CHFP1169 27cm 11 micron   Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CHFP1170 32cm 11 micron   Cotton 0.05 11 µm Medium 86 0.2 Flat Smooth Bright white
          CFP2 grade
          CHFP1171 4.25cm 8 micron   Cotton 0.05 8 µm Medium-Slow 101 0.17 Flat Smooth Bright white
          CHFP1172 5.5cm 8 micron   Cotton 0.05 8 µm Medium-Slow 101 0.17 Flat Smooth Bright white
          CHFP1173 7cm 8 micron   Cotton 0.05 8 µm Medium-Slow 101 0.17 Flat Smooth Bright white
          CHFP1175 11cm 8 micron   Cotton 0.05 8 µm Medium-Slow 101 0.17 Flat Smooth Bright white
          CHFP1177 15cm 8 micron   Cotton 0.05 8 µm Medium-Slow 101 0.17 Flat Smooth Bright white
          CHFP1180 32cm 8 micron   Cotton 0.05 8 µm Medium-Slow 101 0.17 Flat Smooth Bright white
          CHFP1099 Pleated 32cm 8 micron   Cotton 0.05 8 µm Medium-Slow 101 0.17 Flat Smooth Bright white
          CFP4 grade
          CHFP1184 9cm 25 micron    Cotton 0.05 25  µm Fast 94 0.21 Flat Smooth Bright white
          CHFP1185 11cm 25 micron   Cotton 0.05 25  µm Fast 94 0.21 Flat Smooth Bright white
          CHFP1186 12.5cm 25 micron    Cotton 0.05 25  µm Fast 94 0.21 Flat Smooth Bright white
          CHFP1004 24cm 25 micron    Cotton 0.05 25  µm Fast 94 0.21 Flat Smooth Bright white
          CHFP1005 27cm 25 micron    Cotton 0.05 25  µm Fast 94 0.21 Flat Smooth Bright white
          CHFP1006 32cm 25 micron    Cotton 0.05 25  µm Fast 94 0.21 Flat Smooth Bright white
          CFP5 grade
          CHFP1067 7cm 2.5 micron    Cotton 0.05 2.5 µm Slow 97 0.195 Flat Smooth Bright white
          CHFP1068 11cm 2.5 micron    Cotton 0.05 2.5 µm Slow 97 0.195 Flat Smooth Bright white
          CFP200 grade
          CHFP1086 9cm 1-5 micron   Cotton 0.1 1-5 µm Slow 95 0.17 Flat Smooth White-High
          CFP201 grade
          CHFP1088 9cm 7-14 micron    Cotton 0.1 7-14 µm Medium-Slow 70 0.16 Flat Smooth White-High
          CHFP1070 11cm 7-14 micron   Cotton 0.1 7-14 µm Medium-Slow 70 0.16 Flat Smooth White-High
          CHFP1073 12.5cm 7-14 micron   Cotton 0.1 7-14 µm Medium-Slow 70 0.16 Flat Smooth White-High
          CHFP1077 15cm 7-14 micron    Cotton 0.1 7-14 µm Medium-Slow 70 0.16 Flat Smooth White-High
          CHFP1081 24cm 7-14 micron    Cotton 0.1 7-14 µm Medium-Slow 70 0.16 Flat Smooth White-High
          CHFP1084 33cm 7-14 micron   Cotton 0.1 7-14 µm Medium-Slow 70 0.16 Flat Smooth White-High
          CFP202 grade
          CHFP1089 9cm 15-19 micron    Cotton/Binder N/A 15-19 µm Medium Fast 90 0.3 Flat Crepe White-Low
          CHFP1071 11cm 15-19 micron    Cotton/Binder N/A 15-19 µm Medium Fast 90 0.3 Flat Crepe White-Low
          CHFP1074 12.5cm 15-19 micron    Cotton/Binder N/A 15-19 µm Medium Fast 90 0.3 Flat Crepe White-Low
          CHFP1078 15cm 15-19 micron    Cotton/Binder N/A 15-19 µm Medium Fast 90 0.3 Flat Crepe White-Low
          CHFP1080 18.5cm 15-19 micron    Cotton/Binder N/A 15-19 µm Medium Fast 90 0.3 Flat Crepe White-Low
          CHFP1092 25cm 15-19 micron    Cotton/Binder N/A 15-19 µm Medium Fast 90 0.3 Flat Crepe White-Low
          CHFP1093 33cm 15-19 micron    Cotton/Binder N/A 15-19 µm Medium Fast 90 0.3 Flat Crepe White-Low
          CFP226 grade
          CHFP1094 33cm 20-25 micron    Cotton/Binder N/A 20-25 µm Fast 70 0.24 Flat Crepe Gray-Low
          CFP230 grade
          CHFP1090 9cm 30 micron    Cotton/Binder N/A 30 µm Very Fast 120 0.44 Flat Crepe Gray-Low
          CHFP1072 11cm 30 micron    Cotton/Binder N/A 30 µm Very Fast 120 0.44 Flat Crepe Gray-Low
          CHFP1075 12.5cm 30 micron    Cotton/Binder N/A 30 µm Very Fast 120 0.44 Flat Crepe Gray-Low
          CHFP1079 15cm 30 micron    Cotton/Binder N/A 30 µm Very Fast 120 0.44 Flat Crepe Gray-Low
          CHFP1082 24cm 30 micron    Cotton/Binder N/A 30 µm Very Fast 120 0.44 Flat Crepe Gray-Low
          CHFP1083 25cm 30 micron    Cotton/Binder N/A 30 µm Very Fast 120 0.44 Flat Crepe Gray-Low
          CHFP1085 33cm 30 micron    Cotton/Binder N/A 30 µm Very Fast 120 0.44 Flat Crepe Gray-Low
          CFP802 grade
          CHFP1091 Pleated 12.5cm 15 micron    Cotton/Binder N/A 15 µm Fast 70 0.22 Fluted Crepe Gray-Low
          CHFP1095 Pleated 18.5cm 15 micron    Cotton/Binder N/A 15 µm Fast 70 0.22 Fluted Crepe Gray-Low
          CHFP1096 Pleated 24cm 15 micron   Cotton/Binder N/A 15 µm Fast 70 0.22 Fluted Crepe Gray-Low
          CHFP1098 Pleated 32cm 15 micron    Cotton/Binder N/A 15 µm Fast 70 0.22 Fluted Crepe Gray-Low
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