Diacell® Diasqueeze
FTIR/Raman Spectroscopy, Pmax = 1kbar, T = 300 K, WD = 5 mm, A = 100°
- The Diacell® Diasqueeze is fitted with type IIas synthetic diamond anvils with 0.80 mm culet size
- The diamond anvil cell is designed to flatten material to allow maximum transmission of the IR radiation resulting in sharp, clear IR spectra
- The Diacell® Diasqueeze is not a conventional diamond anvil cell and only used to spread samples
- A guiding plate, compatible with most FTIR spectrometers, is also supplied as standard. This guiding plate enables the cell to be mounted vertically onto FTIR sample holders
- Is suitable also for very demanding ultra-low Raman background measurements
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Description
The Diacell Diasqueeze FTIR diamond anvil cell with conical type IIas synthetic diamonds was designed for examining materials in a FTIR spectrometer or an IR microscope but also is suitable for very demanding ultra-low Raman background measurements.
The recorded IR spectrum is known as the “chemical fingerprint” of a substance because it is unique to each chemical compound. The diamond cell is designed to flatten material to allow maximum transmission of the IR radiation resulting in sharp, clear spectra.
This cell, which includes seats and type IIas diamond anvils (8-sided), is delivered aligned and ready for use.
A guiding plate, compatible with most FTIR spectrometers, is also supplied as standard. This guiding plate enables the cell to be mounted vertically onto FTIR sample holders.
Applications
The Diacell Diasqueeze is used in many forensic science laboratories for the infrared (IR) analysis of trace evidence, such as paint chips, fibers, plastics, nylon, rubber, paper products, minerals and chemicals, including controlled substances.
Infrared spectroscopy is one of the few analytical techniques considered by the forensic science community to have the highest discriminating power required to provide confirmatory evidence about the chemical composition of a material. FT-IR is used extensively in most forensics laboratories to identify materials such as seized drugs and possible evidence from a crime scene.
One area where FT-IR has proven particularly valuable is analyzing automotive paint chips. A number of forensics laboratories have reported the significance of the infrared spectral range below 400 cm-1 in helping to identify specific inorganic pigments or minerals in a paint sample. For example, see E.M. Suzuki, J Forensic Sci. 1992 Mar 37(2) : 467-87 – “Fourier transform infrared analyses of some particulate drug mixtures using a diamond anvil cell with a beam condenser and an infrared microscope”.
Specifications
| Cell Material | AISI 316 |
| Anvil Support Plate | Tungsten Carbide |
| Pressure Mechanism | Screw Drive |
| Maximum Pressure | 1 kbar |
| Temperature Range | 300 K |
| Top Angle | Conical 100º |
| Bottom Angle | Conical 100º |
| Lateral Access | N/A |
| Heating | N/A |
| Cooling | Cold Air |
| DAC Diameter | 38 mm |
| DAC Height | 13 mm |
| Working Distance to Sample | 5 mm |
| Numerical Aperture | 0.76 |
| Interfacing Solution | FTIR Spectrometer Interfacing Plate |
| DAC Weight | 70 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.
Documents
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
Application Note Bragg Mini vs Diasqueeze
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.
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Diamond Anvils Diamond Anvil, Type IIas, Boehler-Almax, 2.30 mm Product code: [P02179] |
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Lower anvil support plate Flat diamond mount, 100°, WC (H10F) Product code: [P01426] |
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Top anvil support plate Hemispherical Mount, 100°, WC (H10F) Product code: [P01425] |
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Interfacing plate FTIR Spectrometer Interfacing Plate Product code: [A16200] |
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Set of Spare Screws Includes tilt and lateral alignment screws, clamping screws Product code: [To be confirmed] |
FAQs
What is the difference between Diasqueeze and HPDO M-A-II ?
Diamond Anvils:
- Diacell Diasqueeze uses type IIac diamond anvils, while HPDO M-A-II uses type IIas anvils.
- Type IIac anvils are suitable for IR spectroscopy but not ideal for Raman spectroscopy due to high fluorescence.
- Boehler Almax anvils in Diasqueeze offer optimized mechanical loading and easier fitting.
Design and Features:
- Both cells use three finger screws with springs for applying force and pressure.
- Improved anvil seat design in Diasqueeze for better alignment and reduced breakage.
- Standard sample contact diameter is 0.80 mm, with other sizes available on request.
- Holding plate not included, but custom requirements can be discussed.
Can you repair the old HPDO Cell?
We repair HPDO M-A-II cells with two service options:
- P01500: Regluing salvaged anvils.
- P01500UPGRADE: Replacing damaged anvils and seats (more expensive).
We will inform you before proceeding with upgrades.
What is the maximum pressure I can achieve with the Diasqueeze ?
The Diasqueeze is designed to be used in the kbar pressure range (~ 1kbar range*) applying the force only via three thumb spring loaded screws. It is fitted as standard with high purity Type IIas diamond anvils, 2.30 mm Boehler-Almax design, 8 – sided and with 0.80 mm culet size. With this configuration, this cell is mainly a micro-sampling device, to be used for analytical studies such as finding the chemical composition of materials. This cell is used without a gasket.
(*) 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.
Why are my clamping screws extending past the lower plate and interfering with the interfacing plate?
The clamping screws on the Diasqueeze should only be screwed until their tips are flush with the bottom of the lower plate. If they extend beyond this point, it can cause interference with the interfacing plate. This issue is likely due to incorrect tightening. Please refer to section 4 of the updated user guide for more detailed instructions.
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