Laboratory Mixers

Mix, emulsify, homogenise, disintegrate and dissolve effectively and efficiently all within the lab.

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Laboratory Mixers

Laboratory Mixers

Laboratory Mixers

The latest development in high shear lab mixing – the Silverson L5 Series – is ideal for all laboratory work, research and development, QA analysis and small scale production in all industries.

The L5 Series Laboratory Mixer is suitable for the widest range of applications – mixing, emulsifying, homogenising, disintegrating and dissolving – with an efficiency and flexibility unmatched by other machines. With a capacity from 1ml up to 12 litres and the ability to mix in-line with flow rates up to 20 litres/minute, they offer excellent reproducibility when scaling up to full-scale production and provide an accurate and easy means of forecasting the performance of larger Silverson machines under full-scale working conditions.

The multifunctional L5 Series features touch screen control with digital tachometer, programmable integral timer and amperage display. This level of instrumentation is invaluable for applications where process validation and reproducibility are required.

How It Works

The advantages of Silverson’s high shear rotor/stator laboratory mixer over simple conventional stirrers or agitators stem from the multistage mixing/shearing action as materials are drawn through the specially designed Silverson workhead - the heart of every machine

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 upwards from the bottom of the vessel and into the centre of the workhead.

Stage 2

Centrifugal force then drives 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 and circulated into the main body of the mix.

Stage 4

The materials expelled from the head are projected radially at high speed towards the sides of the mixing vessel. At the same time, fresh material is continually drawn into the workhead maintaining the mixing cycle. The effect of the horizontal (radial) expulsion and suction into the head is to set up a circulation pattern that minimises aeration caused by the disturbance of the liquid’s surface.


Laboratory Mixers – Small Scale
Interchangeable Laboratory Workheads

Mixer Options


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

1ml up to 12 litres.
Motor Unit
Robust two-piece designed for cool, quiet and continuous operation.
L5M-A: 750W (1hp) 220 volt, single phase (110 volt optional), 50/60 Hz. Nominal maximum speed 10,000 rpm. L5M & L5T: 250W (0.33hp) 220 volt, single phase (110 volt optional), 50/60 Hz. Nominal maximum speed 8,000 rpm (6000 rpm under full load).
Speed Control
Infinitely variable electronic speed control with integral on/off switch.
Electric Rise & Fall Bench Stand
The mixing unit may be effortlessly raised and lowered using the push-button control on the motor unit.
All wetted parts are in grade 316 stainless steel with the exception of the bush, which may be bronze alloy or PTFE. L5 Series mixers feature a durable, easy-to-clean white engineered polymer body. The flat base is covered by a removable non-slip mat, which is resistant to most solvents.
Over 40 interchangeable mixing assemblies are available including In-Line, Ultramix, Duplex and Tubular assemblies.

Model A B C D E
Max. Height Min. Height
L5T, L5M 940 305 508 330 30

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.

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