Tremont - Model D-23 -Specialty Glass Microfiber Media

The MultiDensity™ product platform now includes this easy to use, thinner¹ binderless glass microfiber filter which retains solids in a broad size range.  Larger solids become entrapped on the built in pre-filter layer allowing the multiple density zones of filter to entrap finer solids rapidly and reliably.  This yields a faster flow rate with higher fluidic capacity.  The borosilicate glass is highly resistive to aggressive solvents, acids² and base with a usable range of 0-14pH and a wide effective temperature range of -200 to 500°C. ³

• Up to 4x capacity of traditional glass microfiber filters in same porosity range
  • Handles larger sample volumes or samples with higher ratio of solids.
  • Less frequent filter changes = fewer variables in sample prep.
• 100% binderless glass microfiber, formed to create a built-in pre-filter
  • Lower extractables for better quality analysis.
  • Wide ranging chemical compatibility borosilicate glass
• Finely controlled porosity for consistent and reproducible results
  • Extends the life of a membrane when used in series.
  • Disk to disk results are consistent.
• Laser cut for decreased fiber shedding and increased handling stability
  • Fibers on cutline are fused together to form an easy to handle disk.
  • Fewer extraneous fibers to wash out into filtrate
• This material is offered in custom product variants and OEM.

Introducing the IW Tremont MultiDensity™  filter disk. This exciting new product is a 100% borosilicate binderless glass microfiber filter which demonstrates several layers of density along with a unique surface formation that speeds and optimizes filtration. These filter disks can handle sample preparation tasks typically considered too challenging for other analytical filter products. This unique product bridges the gap between macro and micro analytical filtration.

D-23^® Whole Blood Separation Media: The Grade D-23® is a point of care diagnostics borosilicate glass microfiber filter media containing a proprietary acrylic binder system. This customizable material represents a platform of product variants. The base glass media is supplied ready for your application of chemistries. When supplied as a whole blood separator a novel coating technology is utilized which yields high quality plasma with surprising efficacy and no red cell Hemolysis . The coated version material has been developed by a CRO in the United States whose specialty is blood separation and device development. This market proven media is currently included as a component in successfully commercialized and patented devices with 510K filings.

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".

Qualitative Grades

CFP1: Very widely used filter media demonstrating 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 separation 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.

CFP2: A more retentive and absorbent media than 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 25µm. 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.

CFP5: Filtration of very fine particulate and clarification with applications in environmental sciences and chemical analysis.

CFP6: Very similar basis and thickness to CFP5, but with a slightly less retentive porosity. Also, due to the furnish of this paper, the ash content is higher than the balance of the qualitative line. Material is commonly specified in environmental applications.

Quantitative Grades

CFP40: 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 & 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: Very fast flow rates and loose retention characteristics make this grade ideal for initial separation of gelatinous precipitates.

CFP42: 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.

CFP43: Positioned as an intermediate within the quantitative cellulose family, this grade demonstrates medium retention and flow rates. It is ideal for gravimetric analysis of soil samples, surface water testing procedures and used in air sample monitoring equipment.

CFP44: 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.

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
• 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.