Dumont Forceps

Dumont list

Original DUMONT forceps are recognized the world over for their exceptional quality and durability.

0302-SS-140-CO Very fine, very long and narrow, epoxy covered 140mm, stainless steel
0102-P-PO Strong, ordinary points 120mm stainless steel polished. Matt finish available. Ask for prices
0102-2-PO Strong fine long points 120mm stainless steel, polished
0109-2-PO **Dumostar** polished, 120mm
0102-2A-PO Flat round points 120mm stainless steel
0102-3-PO Fine for hairsprings 120mm stainless steel
0103-3-PO 120mm Dumoxel
0103-3C-PO 110mm Dumoxel, fine points, short
0109-3-PO **Dumostar** polished
0109-3C-PO **Dumostar** polished
0102-4-PO Superfine points 110mm stainless steel, polished
0103-4-PO 110mm Dumoxel
0109-4-PO **Dumostar** polished or matt finish
0108-5-PO Superfine for hairsprings, thinner waist than the 0102-4-PO, 110mm stainless steel
0103-5-PO 110mm Dumoxel
0109-5-PO **Dumostar** polished
0102-5/45-PO Fine points, perfect finish, bent at 45° 109mm stainless steel
0102-6-PO Sharp hooked points
0102-7-PO Curved points, fine 115mm stainless steel
0103-7-PO 115mm Dumoxel
0109-7-PO **Dumostar** polished or matt finish
0102-7A-PO Curved points, strong 115mm stainless steel, polished
0103-7A-PO 115mm Dumoxel

NEGATIVE TWEEZERS

0102-N4-PO Superfine points, negative 108mm stainless steel, polished
0102-N7-PO Superfine curved points, negative 115mm stainless steel, polished

ANTICAPILLARY

0202-N5AC-PO/PS No. 5 Superfine points. Self closing, 108mm stainless steel
0202-N7AC-PO/PS No. 7 Fine curved points, Self closing, 115mm stainless steel
DUMOSTAR
0209-3-PO Polished – matt finish is available
0209-3C-PO Polished – matt finish is available
0209-4-PO Polished – matt finish is available
0209-5-po Polished – matt finish is available
0209-55-PO Polished – matt finish is available
0209-7-PO Polished – matt finish is available

ELECTRONIC

0302-2-CO Strong fine long points, 120mm blue epoxy covered, stainless steel
0302-2A-CO Flat round points, 120mm blue epoxy covered, stainless steel
0304-2-CO Strong fine long points 120mm green epoxy covered, non-magnetic
0304-2A-CO Flat round points, 120mm green epoxy covered, non magnetic

GRADE DEFINITIONS OF STAINLESS STEEL

Three grades of stainless steel are used to manufacture Dumont tweezers:

  • “Dumoxel” is non-magnetic and strongly anti-corrosive. It is softer than Inox.
  • “Inox” are made from quality surgical stainless steel. Surgical steel is magnetic and this can be a problem when handling nickel grids. Inox is less acid resistant than Dumoxel or Dumostar.
  • “Dumostar” is a cobalt rich stainless steel alloy with outstanding characteristics and unmatched durability. They are non-magnetic.The steel is resistant to fatigue; the tips never lose their elasticity. Dumostar’s resistance is quite superior to the best of stainless steels. It  has very good resistance to corrosion in: seawater, HCL, H3PO4, HNO3, H2SO4 and neutral and alkaline environments.

Tweezers: types of finish, especially referring to the tips:

  • “Biology” have the finest points. They are available in Dumoxel and Dumostar. Straight pointed tweezers are finer than curved.
  • “High Precision” (H.P.) is most commonly used in EM work. They are available in Dumoxel, Inox and Dumostar. This is the standard grade and we supply these unless “Electronic” or ” Biology” are specified.
  • “Electronic” are not as fine as high precision; they are available in Inox only. For large tweezers, a more robust tip is no disadvantage and electronic grade is good value.

Tweezers: other features

  • Epoxy coating. Except for the tips, the electronic tweezers are covered with a durable blue epoxy coating, giving extra thermal and electric insulation. The epoxy can be used up to 120 degrees C. The intact coating is 220V safe and exceptionally resistant to solvents, acids and saline solutions, but not to strong caustics.
  • AC are anti-capillary tip tweezers; they are only available in “Biology” grade. Though easily damaged, these tweezers defy capillary action and they are favoured by some users for “staining” operations.
  • “Medical” type tweezers usually have ribbed finger-grips and a particularly fine surface finish. Some types are mirror-polished, but most types are supplied with a fine matt finish.The medical finish is available in just a few styles.

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