ultra diamond knife

ultra diamond knife
Ultrastructure of the roundworm Caenorhabditis elegans. Scale bar = 1μm., Thomas Müller-Reichert, EM TechnologyDevelopment, MPI Dresden, and Kent McDonald, Electron Microscopy Laboratory, University of California, Berkley.

Ultra Diamond Knife

Ultra Diamond Knife

Highest quality diamonds and optimal crystal orientation guarantee perfect ultrathin sections and a durable edge

Section pick-up is facilitated as the boat is horizontal allowing the water to completely fill the boat all the way round

A hydrophilic surface makes it easy to wet the cutting edge, even with a low water level.

ultra 35° and ultra 45°

ultra 35°

In 1989 J. C. Jésior (Ref. Jésior) demonstrated considerably reduced compression, smoother section surfaces and improved structural preservation thanks to the use of our ultra 35° knives.

In the meantime, a large number of scientists have recognized the advantages of 35° knives, in particular for sectioning Lowicryls and non-homogenous specimens, as well as non-decalcified bone, dental materials, etc.

The ultra 35° knives are perfect for sectioning relatively soft materials research specimens including metals and polymers, as well as hard specimens such as semiconductors, superconducting oxides, catalysts, nano-crystalline ceramics, etc (Refs. Mahon, Glanvill, Swab, Quintana, Maniette, Schubert-Bischoff).

The ultra 35° knife has demonstrated it's usefulness as a standard knife for the majority of applications in both biological and materials research.

The ultra 35° knife (in the triangular holder) with a cutting range of 100nm - 2μm is used for dry sectioning of epoxy or acrylic resin embedded biological samples, which need to be investigated by element analysis (Ref. Edelmann) and SIMS (Ref. Guerquin-Kern). The gliding of the sections on the dry knife surface is facilitated with the use of our Static Line II ionizer.

ultra-semi 35°

Similar to our ultra 35° 3.0 mm with a greater thickness range (50-500nm).

ultra 45°

Acknowledged as the appropriate knife angle for routine sectioning of both biological and material research specimens, it represents a balanced compromise between section quality and durability.

Ultra Jumbo

The Ultra Diamond knife is now available in Jumbo with 35° and 45° angles and in 2.0mm and 3.0mm sizes.

Ordering Information

All products can be ordered online using a credit card or purchase order number for payment. Order online:

Diamond Knives and accessories can be ordered by phone at 215-412-8390 or fax 215-412-8450.


Your benefits of working with Diatome

Free customer service

Sectioning tests with biological and material research specimens of all kinds.

We send you the sections along with the surfaced sample, a report on the results obtained and a recommendation of a suitable knife.

Complete discretion when working with proprietary samples.

Re-sharpening and reworking service

A re-sharpened Diatome diamond knife demonstrates the same high quality as a new knife.

Even knives purchased in previous years can continue to be re-sharpened.

All knives can be reworked into another type of knife for no extra charge, e.g. ultra to cryo or 45° to 35°.

Exchange service

Whenever you exchange a knife we offer you a new Diatome.

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Contact Us

1560 Industry Road
P.O. Box 410
Hatfield, PA 19440
tel: 215.412.8390
fax: 215.412.8450
email: sgkcck@aol.com

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