General Lab

Quantitative Cellulose Filter Papers

Product Description

Quantitative cellulose filter papers are primarily used in gravimetric analysis procedures and perform separations by entrapping particulate within the random matrix of cellulose fibers within the depth of the media. This media family is also widely used in methods to prepare samples for further testing using many types of instrumentation.

These high-quality filter papers are manufactured from refined pulp and alpha linters. They are acid washed and have an extremely low ash content.

Quantitative grade applications and descriptions:

CFP40 grade
Demonstrating medium retention and flow rates, this media is widely used in many general quantitative procedures in both liquid and gas. These procedures include: standard environmental test procedures such as soil sample analysis and the collection of trace elements and radionuclides in air samples. Also used in liquid food tests for determination of sediments, primary analysis of cements and slurries and sample preparation prior to spectrophotometry. 

CFP41 grade
Fast flow rates and loose retention characteristics make this grade ideal for initial separation of gelatinous precipitates.

CFP42 grade
This media demonstrates an extremely high retention rate for a cellulose filter media. Its uniquely high retention rate makes it ideal for any gravimetric analysis of very fine precipitates.

CFP44 grade
Very similar to CFP42 but demonstrating a slightly wider retention rate within a similar flow rate. Typically used in the analysis of samples requiring separation of very fine precipitates.

CFP540 grade
Pure cotton, ashless, 7-8micron, medium flow, hardened surface.


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

Terms

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 Ash Content (%) Retention Flow Basis Weight (g/m2) Thickness (mm) Flat/Fluted Surface Brightness
Quantitative filter paper
CFP40 grade
CHFP1008 9cm 8 micron    Cotton/Ashless <0.01 8  µm Medium 85 0.2 Flat Very smooth Bright white
CHFP1009 11cm 8 micron   Cotton/Ashless <0.01 8  µm Medium 85 0.2 Flat Very smooth Bright white
CHFP1010 12.5cm 8 micron   Cotton/Ashless <0.01 8  µm Medium 85 0.2 Flat Very smooth Bright white
CHFP1011 15cm 8 micron   Cotton/Ashless <0.01 8  µm Medium 85 0.2 Flat Very smooth Bright white
CFP41 grade
CHFP1015 11cm 20 micron   Cotton/Ashless <0.01 20 µm Fast 85 0.22 Flat Very smooth Bright white
CFP42 grade
CHFP1019 4.25cm 2.5 micron   Cotton/Ashless <0.01 2.5 µm Slow 140 0.17 Flat Very smooth Bright white
CHFP1020 9cm 2.5 micron   Cotton/Ashless <0.01 2.5 µm Slow 140 0.17 Flat Very smooth Bright white
CFP44 grade
CHFP1029 11cm 3 micron   Cotton/Ashless <0.01 3.0 µm Slow 85 0.165 Flat Very smooth Bright white
CFP540 grade
CHFP1069 2.1cm 7-8 micron   Cotton/Ashless/Hardened <0.01 7-8 µm Medium 85 0.21 Flat Very smooth Bright white
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