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Company Profile


Contact Information

Phone: 631-234-0500
Toll Free: 800-243-7677


Ross, Charles & Son Company
710 Old Willets Path
Hauppauge NY 11788
United States
Ross has manufactured industrial mixing, blending, drying and dispersion equipment since 1842. Standard and custom designs are available to meet the varied processing requirements of our customers. We design and build our mixers and blenders in company owned plants in the United States, China and India. All of our plants are all fully equipped with advanced engineering and manufacturing tools. In the USA alone, we operate five plants and maintain an 8000 sq. ft. Test & Development Center.

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Specialty high shear mixer improves dispersion

October 13, 2008
The PreMax is a highly efficient shear mixer, used to improve dispersion prior to milling. The PreMax contains a specially designed rotor/stator that creates high flow and shear rates. According Read More

Unit mixes viscous materials requiring high, low shear mixing and dispersion

August 27, 2008
The Ross PowerMix is ideally suited to mix viscous materials requiring a combination of high and low shear mixing and dispersion. The patented PowerMix is unique and includes two separate Read More

High-shear mixer with interchangeable rotor/stators

October 9, 2006
The Ross Series 700 High Shear Mixer is commonly used for creating high quality emulsions and dispersions throughout the process industries. This High Shear Mixer incorporates special high-speed rotors running Read More

New cylindrical vacuum dryers

September 26, 2006
New line of cylindrical dryers are ideal for use in the chemical process industries. The unit shown is a 150 cubic-foot model. It is being used to dry specialty chemicals. Read More

Vertical blender offers gentle blending action

August 29, 2006
The Ross Vertical Blender is ideal for the blending of easily degradable solids. The mixing screw rotates around the periphery of the cone, and simultaneously lifts materials from the bottom Read More

2,000-liter sanitary turboemulsifier offered for production of pharmaceuticals

August 7, 2006
Charles Ross & Son Company offers a 2,000-liter turboemulsifier designed specifically for the production of creams, lotions, shampoos and similar products manufactured by pharmaceutical and cosmetic companies. The TE-2000 includes Read More

Explosion-proof triple shaft mixer

July 24, 2006
Laboratory Triple Shaft VersaMix now features an explosion-proof control panel. Completely enclosed, the new model’s components are shrouded for safety and to enhance the overall look of the unit. Included Read More

500 cubic-foot ribbon blender shipped to major chemical company

May 23, 2006
Charles Ross and Son Company recently completed its 36th 500 cubic-foot ribbon blender, which is designed for a major chemical company. The blenders are constructed in stainless steel and each Read More

New high-viscosity disperser introduced

April 3, 2006
The new High Viscosity Disperser is designed to mix and blend high- viscosity non-flowing materials, typically too viscous for a conventional High Speed Disperser. Applications such as pigmented pastes, inks, Read More

New two-gallon planetary mixer design

March 13, 2006
New Double Planetary Mixer incorporates Teflon coated and patented “HV” blades, which enables the mixing of ultra-high viscosity formulations. The new blade design offers many other advantages including: design is Read More

New Products

Ross Storage Vessels

Storage Vessels

July 8, 2014
Ross Storage Vessels are custom-built to meet exact specifications for pressure, temperature, material of construction, cover design, discharge assembly and access ports. Read More
Charles Ross Planetary Dual Disperser

Planetary Dual Disperser

June 24, 2014
Charles Ross & Son Co.'s Planetary Dual Disperser (PDDM) is expanding the processing capabilities of manufacturers around the globe. Read More
Charles Ross Cylindrical Ribbon Blenders

Cylindrical Ribbon Blenders

March 10, 2014
Ross' new line of Model 42C Cylindrical Ribbon Blenders designed to mix dry powders, wet granulations and paste-like materials with densities up to 100 lb/cu.ft. Read More
Charles Ross PreMax batch-style rotor/stator mixer

Ultra-high Shear Mixer with Powder Injection Technology

February 25, 2014
The Ross PreMax is a batch-style rotor/stator mixer designed for ultra-high shear conditions and vigorous flow, an ideal combination that supports high-speed production of fine dispersions and emulsions. Read More
Ross Solids/Liquid Injection Manifold (SLIM) Mixer

Automated Powder Feeding and High-speed Mixing Skid System

February 24, 2014
Designed for automatic ingredient additions and high-speed mixing, the pictured Solids/Liquid Injection Manifold (SLIM) Mixer is piped to a 400-gallon jacketed tank and mounted on a compact skid. Read More
Charles Ross Ribbon Blenders

Rapid, Dust-free Blending of Powders

January 13, 2014
Available in many standard sizes from 1/2 to 1,000 cu. ft. working capacity, Ross Ribbon Blenders are built for a wide range of bulk densities and applications with many customizable features to meet any special, sanitary or heavy-duty requirements. Read More
Ross ISG static mixer

ISG Static Mixers for High-viscosity Applications

October 23, 2013
The Ross Interfacial Surface Generator (ISG) is a patented Static Mixer designed for laminar flow processes such as blending a minor component into a viscous stream. Read More
Ross PowerMix Planetary Disperser

Turnkey Systems for Accelerated High-viscosity Mixing and Discharge

October 16, 2013
Ross manufactures a range of turnkey mixing and discharge stations for batching paste-like materials and high-viscosity formulations. Read More
Ross Laboratory High Viscosity Disperser

Laboratory High Viscosity Disperser

October 1, 2013
The model PBA-2 Laboratory High Viscosity Disperser from Charles Ross & Son features interchangeable bow-tie and paddle blades driven by a 2HP explosion-proof, VFD-capable motor. Read More
Ross Engineering fabricated vessels

Fabricated Vessels

July 15, 2013
Ross Engineering Inc., a custom fabricator of storage tanks, pressure vessels and reactors, has acquired new machining equipment and upgraded its facility to better serve customers. Read More
Charles Ross Ribbon Blender

Ribbon Blenders

July 10, 2013
Ribbon Blenders are commonly used for rapid blending of dry powders, granules, pellets and other solid forms. Read More
Charles Ross Vertical Blenders

Low Shear Blending and Vacuuming Drying

June 18, 2013
Ross Vertical Blenders are ideal for low shear blending of powders, pellets, granules, fibers and other solids. Read More
Ross horizontal paddle blender

Heavy-duty Horizontal Paddle Blender

June 17, 2013
This horizontal paddle blender features a working capacity of 450 gallons and stainless steel 304 product wetted parts. Read More

Powder Induction System with Agitated Recirculation Tank

March 12, 2013
For high-volume solid-liquid mixing requirements, Ross offers specially engineered powder induction systems coupled to an agitated recirculation tank. Read More
Ross VersaMix

R&D and Pilot-scale Mixers

February 11, 2013
Ross manufactures a wide range of bench-top mixers for R&D and pilot-scale requirements, with many selections for multi-viscosity processing, dry solid-solid blending, powder wet-out, inline (continuous) mixing, agitated vacuum drying, homogenization, emulsification and particle size reduction/wet milling. Read More

Chemical Bulk Tanks

February 1, 2013
Ross Engineering Inc., a subsidiary of Charles Ross & Son Company, accepts a wide range of custom fabrication projects including chemical bulk tanks as large as 100,000 gallons. Pictured is Read More

Multi-purpose Lab Mixer

January 14, 2013
Charles Ross & Son Co.’s new multi-purpose laboratory mixer model, the HSM-100LCI-T, is offered with interchangeable mixing attachments. Read More

Portable Dual Shaft Mixer

November 28, 2012
Ross introduces the new Model CDA-30C Portable Dual Shaft Mixer with a working capacity of 10 to 30 gallons. An air/oil hydraulic lift raises and lowers the agitators, a Read More

New Planetary Disperser and Discharge System Turnkey Package

October 23, 2012
Charles Ross & Son Co.’s new Planetary Disperser and Discharge System Turnkey Package is designed for high-viscosity, multi-stage mixing requirements. The Ross PowerMix consists of a stirrer blade and Read More

New Surface Treatments and Coating Options Offered on Mixers

October 9, 2012
Charles Ross & Son Company now offers a variety of surface treatments, coatings and alternative materials on its full range of mixing, blending, drying and dispersion equipment for the Read More

Double Planetary Mixers and Discharge Systems

May 29, 2012
Ross Double Planetary Mixers and Discharge Systems are ideal for quick processing of non-flowing viscous mixtures. Turnkey processes utilizing the change-can mixer and discharge platen routinely benefit from shorter Read More

High Shear Mixer

April 25, 2012
The Ross X-Series Ultra-High Shear Mixer is ideal for products that require great uniformity in a dispersion or emulsion. This inline mixer is often used in processes wherein exceptionally narrow Read More

Multi-Purpose Ribbon Blender

February 14, 2012
The new model 42NSD-1S Ribbon Blender from Charles Ross & Son is a multi-purpose unit equipped with interchangeable double ribbon and paddle agitators. With a maximum working capacity of 1 Read More

Solids/Liquid Injection Manifold

December 20, 2011
The Ross Solids/Liquid Injection Manifold (SLIM) is a high shear mixer system designed to accelerate the dispersion of hard-to-wet-out solids while eliminating floating powders in batch tanks and reducing dusting Read More

High Speed Dispersers

October 12, 2011
A large number of Ross High Speed Dispersers are now offered from stock for immediate purchase or trial/rental. This robust inventory includes many standard laboratory models for batches as small Read More

Ultra-High Shear Mixer

September 28, 2011
The Ross PreMax is an ultra-high shear mixer featuring the patented “Delta” rotor/stator assembly. The unique geometry of the Delta rotor/stator generator produces a double vortex that draws batch material Read More

Dual-Shaft Mixers for Processing Viscous Formulations

August 30, 2011
Ross Dual-Shaft Mixers are ideal for processing pastes, gels, suspensions, slurries and other viscous formulations. Composed of two independently-driven agitators working in tandem, this system is designed for heavy-duty mixing Read More

Ribbon Blenders

August 16, 2011
Ross ribbon blenders cater to a wide range of bulk densities, suitable for industrial or sanitary applications. All units are direct driven by an inverter-ready gearmotor, an integral design superior Read More

Planetary Dual Disperser for High Viscosity Applications

July 18, 2011
The Planetary Dual Disperser is ideal for powerful mixing of high viscosity applications requiring ultra-fine dispersion quality. The PDDM features four agitators – two planetary stirrers and two high-speed shafts Read More

Blender/Dryer for High Temperature Slurries, Pastes

July 6, 2011
Cylindrical blender/dryers are ideal for high-temperature processing of slurries, pastes, granular materials, pellets and powders under vacuum, atmospheric or positive pressure. Custom-built to meet the specific needs of each individual Read More

Double Planetary Mixers Improve Efficiency

June 6, 2011
Double Planetary Mixers incorporate more clean design features to help users improve the efficiency of high viscosity mixing processes. Traditionally equipped with rectangular-shaped paddles, double planetary mixers move batch material Read More

Explosion-Proof Multi-Shaft Mixer with PLC Controls

May 19, 2011
The VersaMix Multi-Shaft Mixer shown is a 100-gallon VersaMix equipped with a three-wing anchor agitator, high speed disperser, rotor/stator mixer designed for sub-surface powder induction, feed ports with pneumatically-actuated ball Read More

Multi-Shaft Mixer for Pastes, Gels, Slurries

April 14, 2011
New VersaMix Multi-Shaft Mixer is designed for producing pastes, gels, slurries and other viscous formulations. This mixer design is composed of three independently-driven agitators working in tandem. The high-speed disperser Read More

New Mixing System and Dispersion System

January 24, 2011
New mixing and dispersion system combines a Ross high shear mixer and a specially designed PowerMix for use in manufacturing fine dispersions. The two mixers are mounted on a common Read More

New High Shear Vacuum Mixer

January 3, 2011
New bench-top model has been added to the company’s line of high shear rotor/stator mixers. The mixers are ideal for dispersion, emulsification, homogenization and particle size reduction. The new LCI-V Read More

Redesigned Double Planetary Mixer and Discharge System

September 29, 2010
The mixer is typically used for the mixing and dispersion of viscous materials. The follower plate discharge system is then used to press viscous non-flowing materials from the planetary mixer Read More

Enclosed Laboratory Dual Shaft Mixer

August 25, 2010
The Laboratory Dual Shaft Mixer is designed for operation to 15-psig internal pressure. The new model is completely enclosed. All components are shrouded for safety and to enhance the overall Read More

Sanitary Mixer for Paste Manufacturing

June 23, 2010
Designed for multiple mixing requirements such as high-speed dispersion, emulsification and particle size reduction, the Triple Shaft Mixer is now available with a Solid/Liquid Injection Manifold or S.L.I.M.™ System. The Read More

Sanitary Screw Discharge Ribbon Blender

May 17, 2010
The blender features a discharge screw positioned across the entire bottom of the trough and powered by a separate direct drive system for independent speed control. The discharge screw assembly Read More

Mixers suited for mixing and dispersion in high viscosity products

November 12, 2009
The mixers are offered from stock with an anchor and a high-speed disperser. Each agitator is independently driven by an inverter duty, explosion proof motor to enable its use for Read More

Discharge screw position provides alternative to traditional ribbon blenders

August 3, 2009
The newly designed ribbon blender features a discharge screw positioned across the entire length of the trough. The screw is powered by a separate direct drive system for independent speed Read More

Mixer provides complete particle disintegration in first pass

July 8, 2009
The new inline high shear mixer is the first to combine: high flow rates (up to 500 gpm) without an auxiliary pump, high tip speeds (up to 18,000 fpm), Read More

Sanitary double planetary mixer added to mixer line

May 4, 2009
Available in many sizes from 1/2 pint to 750 gallons working capacity, the sanitary double planetary mixer is typically used for the vacuum mixing of high viscosity materials up Read More

Skid mounted static mixing systems meet user needs

March 9, 2009
The complete skid mounted static mixing systems are designed to meet the needs of each user and typically include portable skids on caster wheels; LPD or ISG Static Mixers; Read More

Sanitary blenders for intimate dry blending of free-flowing solids

August 11, 2008
The V-Blenders design is most often used for the intimate dry blending of free flowing solids. The solids being blended in these units can vary in bulk density and in Read More

Horizontal vacuum paddle blender recently shipped

June 11, 2007
Charles Ross & Son Company has recently completed and shipped a horizontal paddle blender. The new paddle blender was designed with a 100 cubic-foot working and a 110 cubic-foot full Read More

New laboratory dual shaft mixer

April 4, 2007
New dual-shaft design incorporates a special helical agitator and high-speed dispersion blade. The new combination of agitators provides improved axial and radial turnover of the materials being mixed, as well Read More

New high shear mixer with tip speeds to 17,000 feet per minute

February 6, 2007
The X-Series High Shear Mixer being offered by Charles Ross and Son Company is now being offered with several new optional design features, including rotor-stator gap adjustment from .010 to Read More

Featured Articles


Multi-shaft mixers in the food industry

January 25, 2013
A large portion of food-industry mixing operations are still accomplished by relatively simple single-shaft mixers such as propellers, pitched-blade turbines, impellers and anchor stirrers. Increasingly, however, food manufacturers are seeing the benefits of “one-pot processing,” especially when it comes to high-solids viscous applications that conventional mixers can’t handle. Read More

White Papers


The art of high shear mixing

February 14, 2013
The high-shear rotor/stator mixer, once relegated to a relatively narrow niche of mixing applications, has become a mainstay in many applications in the chemical process industries. The ability to apply Read More

High Shear Mixing and Single-Pass Emulsification

February 1, 2013

Consider an ultra-high shear mixer for your single-pass emulsification requirements. Advantages include simple operation, high throughput rates, consistent product quality, easy cleaning procedure and low maintenance.

Read More

Specifying inline rotor/stator mixers

January 28, 2013
Inline rotor/stator mixers are utilized throughout the process industries for high shear processing of flowable liquid applications. They can be operated in a truly continuous mode wherein feed streams are metered into the mixer; however, inline rotor/stator devices more commonly are set up for recirculation. Read More

Improve emulsion stability through ultra-high shear mixing

July 3, 2012
Today, ultra-high shear rotor/stator designs are available that can improve emulsion stability of certain formulations. Read More

Specifying ribbon blenders

July 3, 2012
The classic ribbon blender is used in food & beverage, chemical, pharmaceutical, plastic, agricultural and other industries. Due to its versatility and economy, the ribbon blender is often the best choice for most mainstream blending applications. Read More

Ultra high shear mixing and deagglomeration

July 2, 2012
Deagglomeraton of solid particles suspended in liquid entails many hours of mixing and multiple passes through milling equipment. In other cases, it requires the use of very expensive but low-throughput Read More
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