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|
|0103-3C-PO||110mm Dumoxel, fine points, short|
|0102-4-PO||Superfine points 110mm stainless steel, polished|
|0109-4-PO||**Dumostar** polished or matt finish|
|0108-5-PO||Superfine for hairsprings, thinner waist than the 0102-4-PO, 110mm stainless steel|
|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|
|0109-7-PO||**Dumostar** polished or matt finish|
|0102-7A-PO||Curved points, strong 115mm stainless steel, polished|
|0102-N4-PO||Superfine points, negative 108mm stainless steel, polished|
|0102-N7-PO||Superfine curved points, negative 115mm stainless steel, polished|
|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|
|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|
|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.