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Precision-engineered stainless steel split dies for square and rectangular pellet pressing
Cell Lab Square & Rectangle Split Pressing Die Sets are specialised tools for compressing powders into uniform square or rectangular pellets. The split sleeve design ensures easy demoulding, reducing the risk of cracks and damage during pellet retrieval—especially important for fragile or sticky powders.
Constructed from 440C stainless steel with RC60–62 hardness, these die sets offer durability and precise sample shaping. Available in sizes ranging from 3×3 mm to 50×50 mm, they support a broad scope of applications in materials science, pharmaceuticals, ceramics, minerals, and powder metallurgy.
Split sleeve design — Allows easy demoulding and minimises pellet cracking.
High-strength stainless steel — Made from 440C stainless steel, hardened to RC60–62.
Multiple formats — Available in square (3×3, 10×10, 20×20, 50×50 mm) and rectangular (20×10 mm) sizes.
Laboratory & industrial use — Ideal for spectroscopy, ceramics, pharmaceuticals, and powder compaction.
Customisable — Additional square and rectangular dimensions available upon request.
| Product No. | Shape | Reference Sample Size | Cavity Depth (mm) | Die Material | Hardness | Dimensions (mm) | Weight |
|---|---|---|---|---|---|---|---|
| CL0656 | Square | 3×3 mm | 30 | 440C Stainless Steel | RC60–62 | Φ53 × 120 | 1.2 kg |
| CL0657 | Square | 10×10 mm | 30 | 440C Stainless Steel | RC60–62 | Φ53 × 120 | 1.2 kg |
| CL0658 | Square | 20×20 mm | 40 | 440C Stainless Steel | RC60–62 | Φ73 × 133 | 3.6 kg |
| CL0659 | Rectangle | 20×10 mm | 40 | 440C Stainless Steel | RC60–62 | Φ73 × 133 | 3.6 kg |
| CL0660 | Square | 50×50 mm | 55 | 440C Stainless Steel | RC60–62 | Φ127 × 150 | 20 kg |
Pharmaceuticals — Tablet and pellet pressing for uniform compaction.
Materials science — Research into novel solid materials and composites.
Ceramics & minerals — Compaction of ceramic and mineral powders.
Analytical chemistry — Preparing solid test samples for spectroscopy and XRF.
Powder metallurgy — Square and rectangular compacts for prototype testing.
Q1: What is the advantage of a split die design?
It allows easy removal of fragile pellets, reducing breakage during demoulding.
Q2: What materials can be pressed?
Ceramics, minerals, metallic powders, halide salts, and pharmaceutical powders.
Q3: Are both square and rectangular dies available?
Yes. This series includes both square and rectangular formats.
Q4: How should these dies be maintained?
Clean and dry after use, and apply light oil during storage to prevent rust.
Q5: Are larger or custom sizes available?
Yes. Custom square and rectangular cavity sizes can be produced on request.



You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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