Charles Ross and Son Co.

Model HSM-100SK-1 multi-purpose laboratory mixer
The Model HSM-100SK-1 multi-purpose laboratory mixer is a bench-top unit that comes with interchangeable mixing attachments, including batch and inline rotor/stator sets, and disperser blades and propellers of various sizes. Depending on the attachment, the mixer can handle formulations with viscosities as high as 50,000 cP. It features a variable-frequency drive that provides speed control from 500 to 10,000 rpm with ±1% accuracy. With 16 in. of clearance under the mixing attachment and 12 in. of distance between the feet at the base, the mixer can be used with vessels of various sizes. The power lift mechanism is activated with push-button control. The mixer is designed for a variety of mixing tasks, such as powder dispersion, deagglomeration, polymer disintegration, solubilization, emulsification, and homogenization.

VersaMix multishaft mixer
The VersaMix multishaft mixer processes viscous formulations using three independently driven agitators working in tandem. The high-speed disperser quickly draws powders into the liquid batch through a powerful vortex. The rotor/stator performs numerous tasks depending on the product being mixed, e.g., breaking down agglomerates, accelerating homogenization, or preparing fine droplets in an emulsion. The low-speed anchor promotes bulk flow and uniform batch temperature while it scrapes the vessel sidewalls and bottom. Optional features include vacuum capability, clean-in-place spray nozzles, temperature probes, interchangeable jacketed mixing vessels, powder induction capability (available on special-design rotor/stators), sight and charge ports, control panels, and PLC systems. Capacities range from 1 to 4,000 gal.

Solids-Liquid-Injection-Manifold (SLIM) System
Designed for the induction of difficult-to-wet solids, such as fumed silica, calcium carbonate, titanium dioxide, gums, thickeners and many pigments, the solids-liquid-injection-manifold (SLIM) system takes advantage of the strong vacuum force that occurs at the intake area and sucks in powders or liquids for immediate emulsification or dispersion. This new model includes all-stainless-steel surfaces and a mirror finish on the interior wetted components. As a result of this clean design, the unit is CIP/SIP-capable. The entire system is mounted on casters to enable portability and includes a 1-3/4-gal funnel for powder charging. Complete controls, sanitary connections, a double mechanical seal and seal barrier system are also provided.

CDA Dual-Shaft mixers
Equipped with an anchor and a high-speed disperser, the CDA Dual-Shaft mixers cater to products with viscosities up to several hundred thousand centipoise. Each agitator is independently driven by an explosion-proof motor to enable its use for variable-speed operation. Stocked units are available in 2-, 10-, 50- and 100-gal sizes (change-can models are available in 2 to 1,000 gal) and include Type 304 stainless steel wetted parts, vacuum construction, and air-oil hydraulic lifts to raise and lower the agitators. Thermocouples, jackets for heating or cooling, and a variety of discharge valves are optional features. Units are available for sale or rental.

Sanitary Ribbon Blenders
Designed for vacuum operations, these new Sanitary Ribbon Blenders are manufactured in Type 316-stainless steel and are polished to enable easy cleaning between batches. Agitators and shaft assemblies are designed and constructed with generous radii and smooth-weld finishes. Shaft-seal rings are readily accessible and easily removable to permit cleaning of all product zone surfaces. These blenders include special cover openings, ports for viewing, jackets for heating or cooling, complete control systems and more. The Sanitary Ribbon Blenders are available in sizes from 1 through 120 ft3.