Qualitative Cellulose Filter Paper - Sterlitech
Qualitative papers perform separation by trapping the particulates within the random matrix of cellulose fibers located in the depth of the media. These papers are used in methods requiring the determination and identification of particulates in both liquid and gas samples.
The "Applications" tab compares detailed specification and application information for each filter grade.
We also have Quantitative papers available for performing gravimetric analysis procedures.
Qualitative Cellulose Filter
CFP1:
Very widely used filter media demonstrating a retention of approximately
11µm 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 separaation 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
Ash
Content: <0.05%
Equivalents:Whatman 1, S&S 595, Millipore 104, Ahlstrom 601, and MFS 2
CFP2: A More retentive and absorbent media that CFP1, with approximately
8µm 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.
CFP3: Virtually identical to CFP1, but twice as thick resulting in a significantly
slower flow rate with a retention of approximately 6µm. This media does
not clog as easily as the other qualitative cellulose types, which allows for
much higher sample volume usage. This media also demonstrates very high levels
of absorbency, permitting the media to be used as a sample conveyance
substrate.
CFP4:
The fastest flow rate demonstrated by any of the qualitative cellulose filter
media´s resulting in a low retention rate of approximately
20-26µm. 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.
Qualitative Cellulose Filter Paper Specification
CFP1 | CFP2 | CFP3 | CFP4 | |
Retention | 11 micron | 8 micron | 6 micron | 20-26 Micron |
Flow | Medium | Medium-slow | Slow | Fast |
Cellulose Fiber Filter Brand Equivalency Chart
Sterlitech | Whatman | S & S | Millipore | Pall | Ahlstrom | Advantec | VWR | Fisher |
---|---|---|---|---|---|---|---|---|
CFP1 | 1 | 595 | 104 | PA1 | 601 | No. 2 | - | P5 |
CFP2 | 2 | 597 | 103 | PA4 | 642 | No. 232 | 413 | - |
CFP3 | 3 | 598 | 103 | PA5 | 237 | N - | - | P8 |
CFP4 | 4 | 604 | 105 | - | 631 | No. 1 | - | - |
CFP40 | 40 | 589/2 | 223 | PA40 | 74 | No. 3 | 454 | Q5 |
CFP41 | 41 | 589/1 | 225 | PA41 | 16154 | No. 5A | - | Q8 |
CFP42 | 42 | 589/3 | 221 | PA42 | 94 | No. 5C | 474 | - |
CFP43 | 43 | 589/5 | 224 | - | - | - | - | - |
CFP44 | 44 | 590 | 222 | - | - | - | 494 | Q2 |