• Gas membrane driven diamond anvil cell;
• Gas membrane controller;
• High pressure gas cylinder;
• High pressure gas regulator;
• High pressure hose to connect the gas cylinder to the gas controller input.
• Gas line to connect the gas controller output to the gas membrane of the diamond anvil cell.

The Gas Membrane Controller is used to control the gas pressure in the gas membrane of the diamond anvil cell.

The main Gas Membrane Controller attributes are  :

• Regulates the gas flow: it precisely injects gas into the membrane to increase the force on the sample.
• Allows remote DAC operation: the pressure can be changed whilst the DAC is mounted on a sample analysis instrument. 
• Allows fine-tuning of the gas pressure: it can increase pressure in small controlled increments.

Almax easyLab supplies either a manual gas membrane controller or an automated gas membrane controller. Visit our Gas Control Products page for more information about these products.

The type of gas used to pressurise the gas membrane is dependent on the temperature of the application:

• Room temperature:  Ar or N2
• High temperature: Ar or N2
• Low temperature: Helium very high purity  (>99.99%) to avoid capillary blockage.

Since the gas membrane requires high gas pressure to operate the DAC, you will need a high pressure gas regulator capable of a 200-bar outlet pressure to feed the GM controller. Please note that the regulator’s inlet thread size depends on your country’s specific gas cylinder regulations.

Standard ancillaries for the operation of a gas membrane DAC:

• High pressure hose used to connect the gas cylinder supply to the GM Controller.
• Assembly of capillary tubing, quick-connect coupling and plug valve used to connect the GM Controller to the gas membrane of the diamond anvil cell.

Additional ancillaries for the safe operation of a gas membrane DAC at low temperatures:

• Low Temperature Relief Valve  – Assembly of a relief valve, capillary tubing and quick connect coupling to connect to the gas supply coming from the GM controller and to the capillary from the gas membrane of a low temperature DAC.
• Flushing Manifold for Cryostat – Valve for GM gas line that allows the cleaning of the the gas line prior to cool down with a cryostat.

Visit our Gas Membranes and Lines Products page for more information about these items.

Watch our video tutorial to learn how to connect the gas lines to the iGM controller.