Ultra-High-Pressure Homogenizer

What is the Ultra-High-Pressure Homogenizer?

An ultra-high-pressure homogenizer reaches 2,000 bar and above to produce very fine nanoemulsions, nanosuspensions and submicron dispersions that conventional machines cannot achieve. It is used when the target particle size lies below about 200 nm.

Overview

The ultra-high-pressure homogenizer extends the working range to 2,000 to 4,000 bar, using reinforced pistons, a heavy valve block and a wear-resistant valve seat, often made from tungsten carbide, ceramic or diamond. Such pressures produce more intense cavitation and shear, so droplets and crystals can be reduced below 100 nm or, for nanosuspensions, to a few hundred nanometers. Because the energy density is high, heating is significant and efficient cooling with a jacketed reservoir or inline heat exchanger is essential. Flow rates are lower than conventional machines at the same motor power, typically 10 to 200 L/h. Seals and valve components are consumables with short service intervals. Applications include pharmaceutical nanosuspensions of poorly soluble drugs, high-quality nanoemulsions and stable dispersions of pigments and advanced materials.

How does it work?

A high-pressure homogenizer uses a positive-displacement piston pump to pressurize the sample, then forces it through a narrow valve or interaction chamber. As the fluid passes the valve seat, velocity rises sharply and pressure drops, creating intense shear, turbulence and cavitation that break droplets and cells. In a two-stage design a second valve at lower pressure further refines the particle size distribution and reduces recoalescence. Product temperature rises by roughly 2 to 3 °C per 100 bar, so jacketed heat exchangers or ice cooling control the outlet temperature. Main components are the feed hopper or reservoir, pistons and seals, the valve assembly with wear-resistant seats, a pressure gauge, and the cooling circuit. Operating pressure, number of passes, valve geometry and temperature determine the achievable droplet size, often in the 50 to 500 nm range.

What are the key features?

• Working pressure of 2,000–4,000 bar for very fine dispersions
• Wear-resistant valve seat in tungsten carbide, ceramic or diamond
• Efficient jacketed cooling for high energy input
• Flow rates of 10–200 L/h at ultra-high pressure
• Reinforced pistons and heavy valve block
• Digital pressure and temperature monitoring

What are the technical specifications?

A typical ultra-high-pressure homogenizer configuration offers working pressure of 2,000–4,000 bar, flow rate of 10–200 L/h, working volume of 50 mL–20 L, valve seat material of Tungsten carbide, ceramic or diamond, stages of 1 or 2 and temperature control of Jacketed cooler, 4–90 °C. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Ultra-High-Pressure Homogenizer is used in pharmaceutical nanosuspensions, very fine nanoemulsions, pigment and dye dispersion, advanced materials processing and nutraceutical nanoformulation. Across the wider High-Pressure Homogenizers class, laboratories also deploy it for nanoemulsion and liposome preparation, cell disruption for protein and nucleic acid recovery and pharmaceutical suspension particle size reduction.

Which standards and certifications apply?

Relevant standards and methods include IEC 61010-1, IEC 61010-2-051, ISO 13320, EN ISO 12100 and GB 4793.1. Certification candidates for this model are CE, RoHS and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Install the unit on a level, rigid surface and allow access to the valve, seals and cooling lines. Prime the system before pressurizing to avoid dry running, which damages pistons and seals. Inspect and replace valve seats, O-rings and piston seals on a schedule, because wear shifts particle size. Clean and flush immediately after use; for biological work, validate a cleaning protocol that removes residues between products. Follow IEC 61010-1 for electrical safety and the local pressure equipment rules. Never open the valve assembly while the system is pressurized. Record pressure, passes, temperature and results so that batches can be reproduced, and verify performance with particle size analysis before release.

How do I select the right Ultra-High-Pressure Homogenizer?

Choose ultra-high pressure when target droplets or crystals stay above specification at conventional pressures, common for poorly soluble drugs and fine dispersions. Expect lower throughput, higher heat and shorter seal life. In the RFQ, state target particle size, formulation, volume and cooling capacity.

How does it compare with other High-Pressure Homogenizers variants?

Select first by working pressure and throughput, because these set the achievable particle size and the batch time. Nanoemulsions and liposomes usually need 1,000 to 1,500 bar, while cell disruption often works at 500 to 1,000 bar. Match the machine size to batch volume: benchtop units for 10 to 500 mL, pilot units for 1 to 50 L, and production units above that. Choose the valve or interaction chamber geometry for your application, and whether one or two stages are needed. Confirm wetted materials such as 316L stainless steel, ceramic or diamond for abrasive samples, and the ability to autoclave or steam-in-place where sterility matters. Specify cooling, number of passes, pressure control and data logging in the request.