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Lab instruments for oil and gas. Made in Germany.

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Further instruments...

... for gas hydrate tests

Sapphire Rocking Cell
up to 20 sapphire cells

Rocking Cell RC5
Basic model


Data sheet GHA (english)316 kB

Conditions for hydrate formation

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Gas hydrates short video

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Interesting links

Definition gas hydrates

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Examination of Gas Hydrate Formation with the Gas Hydrate Autoclaves GHA 200 & GHA 350

The Gas Hydrate Autoclaves GHA 200 and GHA 350 by PSL Systemtechnik are hydrate test cells for research the effectivity and efficiency of kinetic and thermodynamic gas hydrate inhibitors, as well as anti-agglomerates.


  • Visual supervision of an experiment with up to 3 cameras
  • Photo- and video recordings are possible
  • Simulates pipeline conditions
  • Long-time experiments
  • Automated test schedule
  • Small footprint
  • Simple opening-mechanism


  • Research of kinetic and thermodynamic hydrate-inhibitors
  • Analysis of anti-agglomerates
  • Optimization of inhibitor-concentrations
  • Quality control

  Technical data Scope of delivery Background knowledge Request further information

The Gas Hydrate Autoclave by PSL is the revisioned and updated version of the standard-instrument for analyzing gas hydrate formation. It offers diverse features in a small space.  Pipeline conditions are realistically simulated in the Gas Hydrate Autoclave. Thereby the effectiveness of hydrate-inhibitors can be reliably checked and optimized in a pressure range of up to 200 bar /2,900 psi (GHA 200) or up to 350 bar / 5,075 psi (GHA 350).

Gas Hydrate Autoclave GHA 200 with camera, cryostat and display-box for research gas hydrate, inhibitors and antiagglomerates.
Gas Hydrate Autoclave GHA 200
Gas Hydrate Autoclave GHA 350 - Interior view with 3 cameras
Interior view GHA 350 with 3 cameras
Gas Hydrate Autoclave with 3 cameras, overhead stirrer and torque measurement
Gas Hydrate Autoclave GHA 350

Pressure-resistant sapphire-glass windows in the Gas Hydrate Autoclaves allows the use of one or multiple boroscope-camera which enables observing the processes inside the autoclave.  Thereby gas hydrate formation can be recorded as photo or video during an experiment. Up to six autoclaves can be operated simultaneously via one PC.

The Gas Hydrate Autoclave GHA 200 is equipped with one borescope camera, it is mounted in the autoclaves' head and observes the sample surface from top view.

The new developed Gas Hydrate Autoclave GHA 350 has two additional cameras on the sides. With these cameras the hydrates behaviour can be observed in the liquid phase (bottom side camera) as well as at the phase boundary (upper side camera).

The autoclaves are all equipped with an integrated magnetic stirrer to simulate turbulent mixing conditions by the use of stirrer bars. Much higher turbulences and shear forces are accessible with the overhead stirrer in combination with different types of rotors.

The overhead stirrer is connected to a torque sensor. By this you can perform torque measurements and get conclusions of the samples viscosity changes. The GHA 200 can be used with either camera or overhead stirrer, changing from camera to overhead stirrer (and vice versa) can be done between experiments. With the GHA 350 you can use three cameras and overhead stirrer simultaneously.

Measuring chart of a long term experiment. The hydrate inhibitor avoids the formation of hydrates for about 30 hours. After that period a pressure reduction is observable.
Measuring chart of a long-term experiment

With the extensive PSL-Software Hydrate complex test schedules are automated. A test run can be flexibly designed with the integrated script-editor. The optical control and the measurement of temperature, pressure and torque offer a comfortable test supervision and extensive analysis opportunities. Photos and videos can be recorded manual or automated. In case of power failures a back-up of measuring results is provided by an auto-restart feature.

Furthermore, the software is distinguished by easy handling and clear display of the measuring data.

The Gas Hydrate Autoclaves can easily be opened and closed by a specially designed mechanism. An integrated double jacket, temperature and pressure sensor, as well as the integrated stirrer enable a full control of experiments. Even small leakage losses are prevented by double seal sets. Thus, long-run experiments of 30 days or longer are possible. The insulation of the Gas Hydrate Autoclave supports a quick heating and cooling as well as good temperature stability at test conditions.

A practical display-box (D-Box) is available optionally. It provides the pressure values of up to six Gas Hydrate Autoclaves at a glance.

Spezifications GHA 200 and GHA 350


GHA 200


GHA 350

Cameras (Number; Position)

1; top

3; 1 top, 2 side


1280x1024 px, RGB32

each 1280x1024 px, RGB32

Pressure range

up to 200 bar / 2,900 psi

up to 350 bar / 5,075 psi

Overhead stirrer

yes, without camera

yes, additional with 3 cameras

Torque measurement

yes, without camera

yes, additional with 3 cameras

Sour gas compatibility



On request we adapt the Gas Hydrate Autoclaves to your requirements.

  Technical data Scope of delivery Background knowledge Request further information