Specialty Cellulose Media

Grade CFP41a

This quantitative cellulose filter paper is primarily used in air monitoring applications and gravimetric

analysis procedures.  They 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.  Due to the hardened surface,this material is suited for smear and wipes applications as well.  These ashless filter papers are manufactured from refined pulp and linters.  They are acid washed and have an extremely low ash content of <0.01%.

Chromatography Paper

This unique media is an ultra-high purity cellulose filter paper.  The proprietary production methods employed produce a media which demonstrates a highly durable surface texture without the high level of organic extractables common to traditional acid-hardening processes.  The alpha cellulose content is a minimum of 97.5% or above and is single source. This media demonstrates excellent lot-to-lot reproducibility.  Material chemistries are verified against a standard using GC techniques prior to papermaking process.

Blotting Paper

This media is a smooth surface, bright white cellulose filter paper.  The material is manufactured from carefully selected, fully bleached and chemically-free pure cellulose fiber without additives or binder.  General laboratory blotting applications require smooth, flat paper stock demonstrating high absorption and wicking characteristics.  Some of these applications include:  membrane backing, sample collection and conveyance of pastes and gels, wicking media for blot apparatus, draw down tests of liquid samples such as paints and adhesives.  The media is also specified in TAPPI T-205 sp-06-Forming handsheets for physical tests of pulp, section 3.9-"Blotting paper."  Also specified in Development of USPS laboratory and pilot-scale testing protocols, 200, Appendix 1A II, no.8, Materials, "Blotters".

  • Products
  • Material Specifications
  • Capabilities


Grade CFP41a

Retention:  12-26 µm

Flow rate classification:  Fast

Flow rate:  28s Herzberg speed

Target thickness:  175-195 µm

Target basis weight:  75-85 g/m2

Typical Production Lot - Metals Analysis:

Cd: <0.05 mg/kg

Cu:  0.09 mg/kg

Zn:  0.8 mg/kg

Bi:  0.25 mg/kg

Co:  <0.05 mg/kg

Mg:  0.77 mg/kg

Mn:  <0.05 mg/kg

Chromatography Paper

Grade:  WT-3000HPC                                                             

Material:  97.5% Alpha cellulose                                             

Linear low rate:  120-130mm/30 min                                      

Basis weight:  180g/m2                                                                                     

Thickness range:  0.33-0.36mm                                            

Ash content:  <0.05%                                                             

Grade:  WT-2500HPC
Material:  97.5% Alpha Cellulose

Retention:  Target 5 µm, range 4-7 µm

Basis weight:  80g/m2

Thickness range:  0.19mm

Ash content:  <0.05%


Blotting Paper

Cut sheet size:  8x8 inches          20.32cm x 20.32 cm

Sheets per carton:  1200

Basis weight:  71.0 lb 1389ft2           249.0 gm2

Thickness:  20.0 mils                     0.51mm

Rapidity:  25s/1.0 mL minimum-according to TAPPI T432 cm-09   Modified testing for western blot rapidity at 35ml/60 sec.

Capillary rise:  125-145 mm/10 min, according to DIN ISO8787 and KLEMM method

Frazier Permeability:  196 L/m2/sec

Tensile strength:  70lbs MD (machine direction)     45lbs CD (cross direction)




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 ouput 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 inch (60.9cm) to 72 inch (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 inch).
  • Low speed, multi roll CNC sheeting (+/- 0.03125 inch).
  • Low tensile strength sheeting capabilities handling the most challenging binderless glass grades to 60 inch 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 inch (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 inch (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 inch.


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