Tremont - Specialty Cellulose Media

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 is a smooth surface, naturally hydrophilic, bright white cellulose filter paper with excellent lay-flat characteristics manufactured from carefully selected, fully bleached and chemically-free pure cellulose fiber without additives or binder.  These grades are highly consistent general purpose diagnostic absorbent pad and wick base.  The fiber processing provides high density, high absorbency and very rapid migration with the even density and high grade formation yielding a very consistent and reproducible migration in both Machine Direction and Cross Direction.  It demonstrates a very high speed absorbency of 25 s/1.0 mL minimum- according to TAPPI method T432 cm-09, modified testing for western blot rapidity at 35ml/60 sec. with no additional surfactants or additives necessary to yield high performance surface absorption rates and lateral migration speeds. Available electrophoresis blotter made with pure cotton linter. The uniformity of this media affords a high liquid volume capacity with little to no leakage along strip.

These grades are highly consistent general purpose material that can be used as diagnostic absorbent pad and wick base.  All are smooth surface, bright white cellulose filter paper with excellent lay-flat characteristics.  The material is manufactured from carefully selected, fully bleached and chemically-free pure cellulose fiber without additives or binder.  The fiber processing is designed to allow both small highly-fibrillated material to blend with longer less processed fiber providing high density, high absorbency and very rapid migration.  The even density and high grade formation yields a very consistent and reproducible migration in both Machine Direction and Cross Direction.   Naturally hydrophilic with no additional surfactants or additives necessary to yield high performance surface absorption rates and lateral migration speeds.  The uniformity of this media affords a high liquid volume capacity with little to no leakage along strip.

This material is a highly consistent general purpose diagnostic absorbent pad and wick base.  Smooth surface, bright white cellulose paper.  Material is manufactured from carefully selected, pure cellulose fiber which is fully oxygen bleached and resin free.  Blott grade demonstrates a very high speed absorbency of 25 s/1.0 mL minimum- according to TAPPI method T432 cm-09, modified testing for western blot rapidity at 35ml/60 sec.

The fiber processing is designed to allow both small highly-fibrillated material to blend with longer less processed fiber for a high density, highly absorbent and very rapid migration.  Ideally suited as a sample moisture sink in multi-layer membrane designs.  Well suited as an end-channel wick in microfluidic devices.

Naturally hydrophilic with no additional surfactants or additives necessary to yield high performance surface absorption rates and lateral migration speeds.  The uniformity of this media affords a high liquid volume capacity with little to no leakage along strip. 

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.  Blott is 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".

Material demonstrates excellent lay-flat characteristics in reel-to-reel processing with very sharp edge held in slitting and die cutting converting processes.  Minimal extraneous fiber or fiber shed is observed in converting and processing.

Blott grade has these additional characteristics

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

Frazier Permeability:  196 L/m2/sec

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

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 wipe 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%.

Flow rate classification:  Fast

Typical Production Lot - Metals Analysis:

• Cd:
• Cu:  0.09 mg/kg
• Zn:  0.8 mg/kg
• Bi:  0.25 mg/kg
• Co: 
• Mg:  0.77 mg/kg
• Mn: 

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 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
• 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.