Name: Vacuum Dry Pressing Die Set
SKU: SDSX.V
Availability: InStock

<h2>What are pressing dies?</h2>
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Pressing dies are the precision-machined tooling inserted into a laboratory press that define the size and shape of a pressed pellet or disc, typically consisting of a cylindrical barrel, a bottom punch or anvil, a top punch, and sometimes an evacuable port. The die determines the pellet diameter, the achievable pressure per unit area at a given press force, and the surface finish quality of the pressed pellet. Standard die sizes are 13 mm for FTIR KBr pellets and 25, 32, or 40 mm for XRF pressed powder pellets, with stainless steel for most applications and tungsten carbide for trace element work where steel contamination must be avoided.
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<h2>What you will find:</h2>
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<ul>
<li>Square Easy Retrieve Dry Pressing Die Set</li>
<li>Cylindrical Easy Retrieve Dry Pressing Die Set</li>
<li>Evacuable Pellet Die Set</li>
<li>Mini Pellet Press Die Set</li>
<li>Hydraulic Press Die Accessories</li>
<li>Pellet Pressing Die Components</li>
</ul>
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<h2>How to choose pressing dies</h2>
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Match die diameter to your analytical instrument's sample holder
The 13 mm die is standard for FTIR spectrometers where the 13 mm pellet fills the aperture of the sample holder, while XRF instruments use 25, 32, or 40 mm diameter cups depending on the specific spectrometer model and cup type. Confirming the required pellet diameter from your instrument's user manual or sample cup dimensions prevents ordering the wrong die size.
Choose evacuable dies for cleaner FTIR pellets in humid environments
An evacuable die includes a vacuum port and o-ring sealed barrel that allows the die contents to be evacuated with a vacuum pump before and during pressing, removing air and moisture from the KBr-sample mixture. This produces pellets with reduced water absorption backgrounds in the FTIR spectrum, important for trace amount analysis where water vapor bands could obscure analyte peaks.
Choose tungsten carbide (WC) dies for trace element XRF analysis
Stainless steel dies contain iron, chromium, and nickel that can contaminate pressed pellets at trace levels detectable by XRF, while tungsten carbide dies introduce only tungsten and carbon, which are not typically analytes in environmental or geological XRF work. For trace element XRF analysis, WC dies are required to avoid systematic contamination of pressed pellet surfaces from the die.
Confirm die compatibility with your press model
Die sets must be compatible with the bore dimensions and plate geometry of the specific press. Confirm that the die outer diameter matches the press die seat before purchase, since dies and presses from different manufacturers may not be interchangeable.
Maintain dies correctly to preserve pellet surface quality
Scratches or pitting on die surfaces transfer defects to pressed pellets, reducing optical quality for FTIR or surface flatness for XRF. Regular gentle cleaning and periodic polishing with fine alumina paste on punch faces maintains die surface quality.
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<h2>Specifications context</h2>
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The pressure applied to the sample equals press force divided by die area: a 10-ton press through a 13 mm die produces approximately 700 MPa, while the same force through a 40 mm die produces approximately 75 MPa. Producing the same pellet density in a larger die therefore requires proportionally more force, and a press adequate for 13 mm FTIR pellets may not deliver sufficient compaction for 40 mm XRF dies.
<a href="https://mbpinc.net/contact-us">Request a quote today from the expert team at Molecular Biology Products Inc. (MBP)</a> to find the right pressing dies for your lab.

Pressing Dies

Vacuum Dry Pressing Die Set Specifications

Vacuum Dry Pressing Die Set

A set of hardened steel Vacuum dry pressing die set for pellet presses, are ready for you to make cylinder-shape pellets in a vacuum condition. These pressing die sets are available in different sizes ranging from 6mm to 50mm diameter.\r\n\r\n

Vacuum Dry Pressing Die Set

SKU : SDSX.V