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Diacell® Diaclamp

Raman/PL/Fluorescence, Pmax = 100 GPa, T = 300 K, WD = 12 mm, A = 50°
  • The high pressure in the Diacell® Diaclamp is achieved by the means of two pairs of left-hand/right-hand bolts, for pressures up to 100 GPa
  • The inner piston-cylinder is separated from the outer clamps that are used to generate the load, thus largely avoiding distortions of the piston-cylinder assembly at the highest pressures
  • The complex gasket-loading process is facilitated by a easy access to the lower anvil and its associated gasket holder
  • The Diacell® Diaclamp may also be manufactured in BeCu, to be compatible with high magnetic field environments

SKU: A56000

For more info, quotation or call: Contact us


In this ingenious cell, high-pressures are generated by forcing together two diamond anvils along a common axis, by means of two pairs of left-hand/right-hand M5 bolts.

The DAC has a piston and inner cylinder that are separate from the outer parts of the cell by which load is generated, thus largely avoiding distortions of the piston-cylinder assembly at the highest pressures.

All the anvil adjustments for translation and tilt are on the inner cell, which is easily removed from the outer assembly for maintenance. Alignment marks (in red) assure correct re-assembly.

The Diacell® Diaclamp is designed to allow especially easy and uncluttered access to the lower anvil and its associated gasket ring, thereby facilitating the complex gasket – loading process. The gasket ring takes 10 mm diameter gasket blanks. A small pin is provided to enable gaskets to be replaced reliably.

Four lateral ports are provided, two of which are tapped M3 to provide alternative mounting positions, such as on X-ray arcs.

The Diaclamp may also be manufactured in BeCu, an alloy with a much greater thermal conductivity than the steel from which the standard cells are constructed.  With brass screws throughout, these cells are compatible also with high magnetic field environments.


The Diacell® Diaclamp is suitable for both Optical and X-Ray applications.  This cell is particularly useful as a first DAC, because of its simpler sample-loading process when compared to other cells.


Cell Material AISI 440C
Anvil Support Plate Tungsten Carbide
Pressure Mechanism Screw Drive
Maximum Pressure 100 GPa
Temperature Range 300 K
Top Angle Conical 50º
Bottom Angle Conical 52º
Lateral Access N/A
Heating N/A
Cooling N/A
DAC Diameter 52 mm
DAC Height 29 mm
Working Distance to Sample 12 mm
Numerical Aperture 0.42
DAC Weight 100 g
Maximum pressure is dependent upon the culet size of the anvils. Almax easyLab is committed to its policy of continuous improvement. Specifications may change without notice. easyLab and Diacell are registered trademarks of Almax easyLab.


We have compiled a series of technical documents (brochures, articles, technical drawings, …) which you might find useful to help you understand this product better.

Technical documentation

Brochure Diaclamp

Technical Drawing

Please contact us for further details on the engineering drawings.


Spares, Accessories and Options

Our diamond anvil cells are aligned and mechanically tested before leaving our factory on their way to your laboratory.

They also come supplied with the required basic tooling, including gasket blanks, to use them. All is contained in the transportation casing to move around laboratories easily.

Below you can find some of the accessories and spares you might also consider. If you cannot find what you need, please do not hesitate to contact our team.

Diamond Anvils
3.1 mm Diacell® design diamond anvils, fitted in stainless steel rings for easy fitting in the Diaclamp
Product code: [P00132], [M50006]
Anvil Support Plate
Tungsten carbide seat with 50° opening angle
Product code: [P00124]
Belleville Washers
Conical spring washer used with the clamping screws
Product code: [P00269]
Gasket Blanks
Stainless steel gasket blanks, 10mm diameter; 0.25mm thick
Product code: [P00113]
Set of Spare Screws
Includes tilt and lateral alignment screws, clamping screws
Product code: [To be confirmed]


What is the maximum pressure I can achieve with the Diaclamp and a given culet size?

Culet size (µm) 200 300 400 500 600 800 1000
Pmax (GPa) (*) N/A 98 63 41 28 16 10

(*) The Pmax values are only indicative. The maximum pressure achievable with a DAC is influenced by many others experimental parameters, like the gasket characteristics (material, thickness and hole size) or the pressure transmitting medium.


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