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Electron Microscopy Sciences

Dumont Positive Action Tweezers, Style 1

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Dumont produces high quality handmade tweezers, and has gained the popularity of all researchers over the years. Developed in 1875 by Arnold Dumont in La Sagne, Switzerland. There is a variety of material which is used to make Dumont tweezers, is shown below:

  • High Precision Grade: Made from (Inox) stainless steel, these tweezers have fine points and they can be used as a substitute for Biological Grade when non-magnetic tweezers are not required.
  • Electronic Grade: These tweezers have a slightly larger tips than the High Precision grade. These tweezers are made from carbon, stainless, and antimagnetic steel.

This Dumont patented alloy is composed of C, Cr, Mo, Mn, Co, Ni and Si. Dumostar is more elastic and more resistant to corrosion than the best stainless steels. It is also perfectly compatible with human tissues and is resistant to mineral and organic acids as well to salt. Although slightly more expensive than other alloys, Dumostar is 100% antimagnetic and is resistant to sterilization temperatures of up to 500°C.This is the most cost effective and appropriate alloy for laboratory use.

Antimagnetic is composed of C, Cr, Ni and Mo. It offers a good resistance to corrosion thanks to its high concentration of molybdenum and is 80% antimagnetic but is not as hard as Inox. Antimagnetic is resistant up to temperatures of around 400°C (DIN 50 914) and is suitable for autoclave sterilization at 270°C.

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EMS #1 Antimagnetic Alloy, Positive Action Tweezers, Electronic Grade, Strong tips, Length: 120mm
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