IW Tremont

Cellulose Filter Paper, Quantitative Grade CFP44, pack/100

Part Number:
Lead Time:
5-10 days
Minimum Purchase:
1 unit
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paper fiber
filter paper
Price: $33.20 - $49.99

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Qualitative and quantitative cellulose filter paper is available in a wide range of grades to meet different separation applications.

Quantitative Cellulose

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

Tremont offers an impressive list of manufacturing capabilities and expertise in glass microfiber and cellulose filter media. We leverage a longstanding and contractual relationship between several mills to put 6 papermaking machines and formers into production. With this enormous capacity at our disposal, we are able to take a project from lab bench through pilot scale and ultimately full production with ease.

Our partner mill output exceeds 120 grade variants manufactured in the USA and internationally. With chemists and scientists of several disciplines, experienced papermakers, the finest controls-on-machine plus a rigorous QA protocol, it is not often a project challenge is beyond our capability.

Paper making capabilities:

  • Paper making machines in flat bed, slant bed, high speed fourdrinier and rotary forming styles.
  • Furnish capabilities of: glass blends, cotton cellulose, soft wood, cotton/wood pulp, synthetics
  • Various levels of water filtration, including R.O. for superior purity in analytical and diagnostic applications.
  • Web widths from 24" 60.9cm to 72" 182.8cm.
  • Basis weights from 8lb to 138lb @ 3000ft2 13g/m2 to 225g/m2.
  • Binder free, Binder burn off, Acrylic, PVA and hybrid chemistries.
  • Gantry mounted traversing densitometry as well as most other high-resolution verification sensors.
  • Static pressure, mixed and multi-stage head boxes.
  • Binderless, mixed box, spray on and pulper-saturation style binder introduction.
  • Single and multi-stage vacuum boxes.
  • Several screen variants for very high consistency formation.
  • Wet stream or dry deckle trim.
  • Unique end of machine board cut-off capability for very high density, high basis weight celluloses.
  • FDA grade manufacturing capabilities.
  • Lot selection, furnish verification and supply chain assurance.
  • Cotton batch traceability ""to farm"" with unique commodity procurement services.

Converting capabilities:

After the papermaking process is complete, our experienced converting staff brings your project from large master rolls down to narrow reels or sheets with ease. Sheeting, die cutting and other unique converting operations are performed at our Hawthorne, NJ facility under our strict ISO production environments.

  • High speed rotary knife sheeting +/- 0.03125".
  • Low speed, multi roll CNC sheeting +/- 0.03125".
  • Low tensile strength sheeting capabilities handling the most challenging binderless glass grades to 60" web width.
  • Vacuum stack counting with laser verification and tab insertion minimum 5 sheet count.
  • Narrow roll slitting down to 1/4inch web width even in low tensile glass microfiber.
  • Shaftless rewind with core ID's down to 1/2inch ID.
  • Die cutting in manual, semi-automatic and automatic repeating modes. Slow speed, platen, clicker, c-frame, fixed tool and bottom-up presses.
  • Tonnage from 1 to 140ton in hydraulic and mechanical types.
  • Narrow web <5.125" 13cm rotary die cutting with unique ""zero-tensile"" capabilities, inline micro perforation and rotary parts cut-off. Vacuum in-field parts removal.
  • Programmable guillotine cutters from 30 to 44" 76.2cm - 111.76cm width.
  • Spreading table station for woven fabrics fabrication.
  • Hole drilling, slotting and complex notching.
  • Heat treating processes ranging from low temp, long exposure to flash and 1100°C muffle furnace treatments.
  • Laminating via heat set, single and dual surface in web widths of 60".

CFP44 Features

  • 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
Part # Size GE/Whatman Equivalent
IWT-CFP44-070 7.0cm diameter 1444-070
IWT-CFP44-090 9.0cm diameter 1444-090
IWT-CFP44-110 11.0cm diameter 1444-110
IWT-CFP44-125 12.5cm diameter 1444-125
IWT-CFP44-150 15.0cm diameter 1444-150
IWT-CFP44-185 18.5cm diameter 1444-185

Quantitative Cellulose Grades

Filter Media Furnish/Finish Retention Flow Ash Content % Basis Weight g/m2 Thickness mm
CFP40 Cotton/Ashless 8 µm Medium <0.01 85 0.2
CFP41 Cotton/Ashless 20 µm Fast <0.01 85 0.22
CFP42 Cotton/Ashless 2.5 µm Slow <0.01 140 0.17
CFP43 Cotton/Ashless 15-17 µm Medium <0.01 85 0.21
CFP44 Cotton/Ashless 3.0 µm Slow <0.01 85 0.165
CFP540 Cotton/Ashless/Hardened 7-8 µm Medium <0.01 85 0.21
CFP541 Cotton/Ashless/Hardened 21-23 µm Fast <0.01 85 0.2
CFP542 Cotton/Ashless/Hardened 2-3 µm Very Slow <0.01 85 0.17
CFP50 Cotton/Low Ash/Hardened 2-3 µm Slow 0.015 86 0.177
CFP52 Cotton/Low Ash/Hardened 6-7 µm Very Slow 0.015 101 0.2
CFP54 Cotton/Low Ash/Hardened 21-23 µm Fast 0.015 85 0.2


  • Filter Media: Nomenclature is serialized and no indication of grade or quality
  • Furnish: The raw materials used in the manufacture of the wet laid product
  • Ash content: Dry method, determined in exposure at 900 ºC 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 1/4or 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



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