Verso Laboratory In-Line Mixers

Verso Laboratory In-Line Mixers

The Silverson Verso is a bench top In-Line mixer ideal for laboratory or pilot scale applications. The unit offers excellent reproducibility when scaling up and provides an accurate and easy means of forecasting the performance of larger In-Line mixers under full-scale working conditions.

The Verso is equipped with a digital tachometer, ammeter and programmable timer, invaluable for applications where process validation and reproducibility are required. It is also compatible with the Silverson “DataLogger” program.


  • Touch pad control panel
  • Powerful 0.75 kW (1 hp) motor with infinitely variable speed control
  • Single or multistage interchangeable workheads available
  • Self-pumping
  • Maximum operating pressure 150 psi (10 bar)
  • 0.75” Tri-clamp inlet/outlet connections
  • Single mechanical shaft seal
  • All wetted parts are in grade 316L stainless steel
  • Hygienic construction
  • Amperage display

In addition to the standard model, the Verso range includes two additional models:

Verso UHS: An Ultra-Hygienic version of the standard model, the Verso UHS is designed for stringent applications in the Pharmaceutical and Biotechnology industries as well as Food, Cosmetics and other clean industries.

Verso-UHS-HV: The Verso-UHS-HV is designed for mixing high viscosity products. It incorporates the same unique and innovative ‘pumping rotor’ design as the production scale UHS-HV In-Line mixers. This substantially increases its self-pumping capacity, allowing it to process products such as gels, creams, sauces and gum solutions on a laboratory scale.

How It Works

Silverson’s Verso Pilot Scale In-Line mixer offers a great many advantages to the processor - speed, versatility, self-pumping, aeration-free, guaranteed efficiency. At the heart of every mixer is Silverson’s high performance rotor/stator workhead.

Stage 1

The high-speed rotation of the rotor blades within the precision-machined mixing workhead exerts a powerful suction, drawing liquid and solid materials into the rotor/stator assembly.

Stage 2

Centrifugal force then drives the materials towards the periphery of the workhead where they are subjected to a milling action in the precision-machined clearance between the ends of the rotor blades and the inner wall of the stator.

Stage 3

This is followed by intense hydraulic shear as the materials are forced, at high velocity, out through the perforations in the stator, then through the machine outlet and along the pipework. At the same time, fresh materials are continually drawn into the workhead, maintaining the mixing and pumping cycle.


Verso – Laboratory In-Line Mixer
Verso UHS and Verso-UHS-HV
Verso – How It Works


A comprehensive range of workheads and screens is available for all Silverson high shear mixers. These easily interchangeable workheads offer great versatility by allowing any machine to be adapted to perform a wide range of mixing operations including emulsifying, homogenising, disintegrating, dissolving, dispersing, blending, particle size reduction and de-agglomerating. Changing from one head or screen to another is quick and simple.

Technical Information

Self-pumping throughputs of up to 2,400 litres per hour.
No Bypassing
Product cannot bypass the precision rotor/stator workhead.
Interchangeable Workheads
Single and multistage rotor/stator configurations as standard.
Materials of Construction
Product contact parts in 316L stainless steel.
Motor Specification
750W (1hp) 220 volt, single phase (110 volt optional), 50/60 Hz. Nominal maximum speed 9000 rpm.
Speed Control
Infinitely variable electronic speed control with integral on/off switch.
Inlet and Outlet Connections
3/4” Tri-Clamp connections. Self-draining tangential outlet.

kW R.P.M A B C D E F
0.75 8900 560 203 118 331 113 81

All dimensions shown are in millimetres. The dimensions shown are approximate only and certified diagrams should be used for installation purposes. Silverson reserves the right to change dimensions and specifications without notice.

Mixer Options

Verso UHS Ultra-Hygienic Mixer

The Verso UHS is an Ultra-Hygienic version of the standard Verso machine, allowing it to be used for stringent applications in the Pharmaceutical and Biotechnology industries as well as Food, Cosmetics and other clean industries.

Verso-UHS-HV High Viscosity mixer

As well as a full range of production machines, Silverson offers a laboratory scale model. The Silverson Verso-UHS-HV is designed for processing higher viscosity mixes than the standard Verso model. This model incorporates the same unique and innovative ‘pumping rotor’ design as the production scale UHS-HV In-Line mixer which substantially increases its self-pumping capacity and facilitates easy scale up to Silverson’s production scale UHS-HV Series In-Line mixers.

FMX5 Laboratory powder/liquid mixer

The FMX5 is a laboratory scale version of the Silverson Flashmix powder/liquid mixer and provides a simple, effective and hygienic means of powder/liquid mixing. The unit is suitable for small scale manufacturing and R&D work with a typical batch size of up to 10 litres, depending on viscosity.

Verso Vessel Package

The Verso can be supplied with a Vessel Package comprising a 20 litre stainless steel vessel, vessel stand and valve.

L5 Series Laboratory Mixer

Over 40 interchangeable mixing assemblies are available for L5 Series Laboratory mixers. The unit features a durable, easy-to-clean white engineered polymer body.

All wetted parts are in 316L stainless steel with the exception of the bush which may be bronze alloy or PTFE.

The mixing unit may be effortlessly raised and lowered using the touchpad control, which offers increased cleanliness and reliability.

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