Core Technology & Working Principle
A rotor-stator homogenizer works by forcing the product through a fixed screen at high velocity. The rotor turns inside the stator at a small clearance, so liquid is drawn in axially, accelerated at the rotor tips and thrown out through the stator slots. The combination of high shear in the gap and repeated passes through the screen is what breaks droplets and agglomerates, and it is why the same machine cannot be replaced by a simple propeller stirrer of the same power.
▲ Shear Happens in the Gap
Droplet break-up depends on the velocity gradient between rotor and stator, not on the motor rating. A small gap at high tip speed produces the shear; a wide gap at the same power does not.
▲ Repeated Passes Through the Screen
Product recirculates through the stator many times per batch. Each pass adds shear, so total energy input over the batch is what sets the final droplet size rather than a single pass.
▲ Stator Geometry Selects the Duty
Fine mesh favours emulsions, slotted stators favour pigment dispersion, and round-hole heads break coarse agglomerates. The head is a process choice, not an accessory.
Precision Engineered Details
The parts below are the ones that decide whether a bench result can be repeated next week, which is the only thing that makes laboratory work worth doing.
PSL / PSF Technical Parameters
The three standard models share the same stand, clamps and controller; they differ in drive power, stator size and speed range. Choose by the volume you actually test, then confirm the head diameter against your vessel.
| Model | Motor Power | Speed Range | Working Volume | Stator Head | Net Weight |
|---|---|---|---|---|---|
| PSL-I | 0.2 kW | 200 – 2,200 rpm | 10 – 1,000 mL | Φ10 mm / Φ18 mm | 11 kg |
| PSF-II | 0.3 kW | 200 – 11,000 rpm | 300 – 5,000 mL | Φ70 mm (slotted, round-hole, fine mesh) | 17 kg |
| PSF-IV | 0.4 kW | 100 – 8,000 rpm | 300 – 10,000 mL | Φ70 mm (slotted, round-hole, fine mesh) | 25 kg |
Reference projects in your industry are available on request.
Our Manufacturing Advantages
🏢 Direct Source Factory
Shanghai Polyc Technology Co., Ltd. is not a reseller. Every PSL / PSF laboratory emulsifier is machined, assembled and tested at our Wuxi plant, so you buy at the factory price and speak directly to the engineers who built it.
✈️ 30–45 Days Fast Delivery
Standard models ship in 30–45 days from confirmed drawings, thanks to our integrated vertical in-house production lines.
🛡️ Strict Quality Control
Key welds, seals and running accuracy are inspected before assembly, and each machine is run at the factory before packing.
🔧 3-Year Global Warranty
Every unit is covered for three years, with remote video support and spare parts stocked for dispatch worldwide.
Target Application Spectrum
The rotor-stator head is specified where the output is a droplet size or a dissolved solid rather than a particle size. The four duties below cover most laboratory demand.
Creams, Lotions & Gels
Oil-in-water and water-in-oil emulsions where droplet size sets texture, gloss and shelf stability, tested at 100 mL to 2 L before a pilot run.
Pigment & Colorant R&D
Wetting out and de-agglomerating pigment concentrates to compare dispersion quality between two vehicle formulations.
Polymer & Resin Solutions
Dissolving granules and powders into solvent or water, where the round-hole head breaks clusters that a stirrer leaves intact.
Agrochemical Formulations
Suspension concentrate and emulsion trials that need a repeatable shear history so two candidate formulations can be compared fairly.
Need a Benchtop Homogenizer Matched to Your Sample?
Send us the sample volume, the target viscosity and the stator geometry you are considering — our engineers will confirm the model and head, then quote directly from the Wuxi factory.
Technical FAQ
Short answers to the questions laboratory managers ask before specifying a rotor-stator homogenizer.