The following informations will enable to get a quick overview about the characteristics of the available materials, coatings, and the different grades of Dumont tweezers.

These can be easily selected with the filter function in the shop.

Inox 02 (Dumont)
Standard Stainless Steel which is not as hard as carbon steels.

Compounding	Grades	magnetic	Temperature Resistance	sterilizable
Stainless Steel: C, Mn, Cr, Si	H/P High Precision Grade Electronic Grade	yes	400°C (DIN 50 914)	no

 

Inox 08 (Dumont)
Provides an excellent resistance to corrosion and a good resistance to salt.

Compounding	Grades	magnetic	Temperature Resistance	sterilizable
Medical Stainless Steel: C, Mn, Cr, Mo, V	Biological Grade Medical Grade	yes	400°C (DIN 50 914)	autoclavable / 180°C

 

Dumoxel (Dumont)
Developed and patented by Dumont to offer the best in resistance to corrosion thanks to its high concentration of molybdenum and chromium. Dumoxel also guarantees an excellent resistance to suphuric environments, hydrochloric acid, as well as to all other mineral and organic acids.

Compounding	Grades	magnetic	Temperature Resistance	sterilizable
Quality Steel Alloy: C, Cr, Ni, Mo, Cu	Biological Grade H/P High Precision Grade Electronic Grade	95% antimagnetic	400°C (DIN 50 914)	autoclavable / 270°C

 

Dumostar (Dumont)
This Dumont patented alloy 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. This is the most cost effective and appropriate alloy for laboratory use.

Compounding	Grades	magnetic	Temperature Resistance	sterilizable
Quality Steel Alloy: C, Cr, Mo, Mn, Co, Ni, Si	Biological Grade H/P High Precision Grade	100% antimagnetic	n.a.	autoclavable / 500°C

 

Antimagnetic (Dumont)
It offers a good resistance to corrosion thanks to its high concentration of molybdenum.

Compounding	Grades	magnetic	Temperature Resistance	sterilizable
Non-magnetic Steel: C, Cr, Ni, Mo	Electronic Grade	80% antimagnetic	400°C (DIN 50 914)	autoclavable / 500°C

 

SA (EMS, Rubis)
Low carbon austenitic steel - non magnetic, generally used where corrosion resistance and toughness are primary requirements.

Compounding	magnetic	Temperature Resistance	sterilizable
Austenitic Steel	100% antimagnetic	melting point: 1400°C	Gamma Sterilization

 

NC (EMS)
Excellent chemical resistance. With a very high shape retention and resistance to fatique. Recommended for all precision work.

Compounding	magnetic	Temperature Resistance	sterilizable
Nickel Alloy: Ni, Cr, Mo	antimagnetic	800°C	n.a.

 

TA (EMS)
Relatively low density, good mechanical properties and high use temperature. Good corrosion resistance and non magnetic. Generally it is used in addition to the high heat and corrosion resistance, a very high strength-to-weight ratio is required.

Compounding	magnetic	Temperature Resistance	sterilizable
Ta	antimagnetic	870°C	n.a.

 

AXAL (Rubis)
These tweezers are a direct replacement for the discontinued Taxal line of Tweezers that we used to carry from Fontax prior to them going out of business. Axal is made from High Cobalt-Chromium-Molybdenum Alloy. With a high Vickers hardness, 100% antimagnetic and acid resistant, these tweezers supply long lasting durability and are practically wearproof.

Compounding	magnetic	Temperature Resistance	sterilizable
Quality Steel Alloy: Co, Cr, Mo	100% antimagnetic	n.a.	n.a.

 

DURAX (Rubis)
Is a specially-hardened chrome-magnesium steel which is also used in the manufacture of surgical instruments. With a 616HV Vickers-hardness, the tip of Rubis DURAX TM tweezers is six times harder than the tip of a standard steel tweezers.

Compounding	magnetic	Temperature Resistance	sterilizable
Surgical Stainless Steel: Cr, Mg	n.a.	n.a.	n.a.

 

Ceramic ZTA (Rubis)
Zirconia Toughered Alumina (ZTA). Non-porous. Superior of hardness, corrosion, heat resistance (up to 1000°C) and insulation.
Fracture toughness and high flexural strength. A superior combination of high strength (from zirconia) and extreme hardness (from alumina). Offers a very hard surface with good abrasion and wear resistance. Excellent thermal properties and high temperature stability.  Extreme corrosion resistance, nearly chemically inert. Electrically insulating. Typically applications include soldering processes, handling of components during thermal and chemical processes. Generally these tweezers are used when very rigid tips are required. Are best suited for working with acids (except HF), for SDM, solders pot and high temperature exposure. Clean room approved. Can be sterilized. Solder repellent. Contamination free. Surface resistively 10E12 ohm.

Compounding	magnetic	Temperature Resistance	sterilizable
Zirconia Toughered Alumina(ZTA): Al2O3 & ZrO2	100% antimagnetic	1000°C	n.a.

 

CP-PEEK/CF30 (EMS)
Very hard, high tensile and flexural strength. High heat resistance to thermal ageing (260-300°C). Excellent chemical resistance.
ESD safe - low surface resistivity (10hoch Ohm).

Compounding	Grades	magnetic	Temperature Resistance	sterilizable
PEEK: Polyetheretherketone with 30% carbon fiber	High performance plastic	100% antimagnetic	260°-300°C	n.a.

 

CF-PA66/CF30 (EMS)
Heat stable (-40°C - 190°C). Rigidity, excellent tensile strength and flexural strength. Good chemical resistance (oils, greases, fuels, non-polar solvents), not resistant to strong acids, alkalis and hot water or hot steam. ESD safe, (avoids dust attraction, sparks, ignition sources). Good conductivity.

Compounding	Grades	magnetic	Temperature Resistance	sterilizable
PA66: Polyamide 66 with 30% carbon fiber	Engineering plastic	antimagnetic	-40°C - 190°C	n.a.

 

RF-PET/GF30 (EMS)
High tensile and flexural strength. Good chemical resistance and low moisture absorption. Electrically insulation. High temperature capability

Compounding	Grades	magnetic	Temperature Resistance	sterilizable
PET: Polyethylene terephtalate reinforced with 30% glass fiber	Engineering plastic	antimagnetic	n.a.	n.a.

 

SV - Synthetic Fiber (EMS)
Good mechanical strength and toughness. Smooth surface. Continuous use temperatures up to 150°C. High purity (clean room and medical devices approved, low extraction value). Excellent chemical resistance to most aggressive substances. Outstanding resistance to HF, HNO3, HCI (all concentrations. 90°C). Resistant to UV and radiation (sterilization). ESD safe, very low surface resistively. Typical applications include the handling of very soft and contamination sensitive materials as well as the handling of wafers during chemical processes etc.

Compounding	magnetic	Temperature Resistance	sterilizable
PVDF: Polyvinylidene fluoride carbon fiber reinforced	antimagnetic	150°C	yes

 

PBTP (Rubis)
High resistance to chemicals, highly isolating and resistant up to 210°C short exposure, non burning.

Compounding	magnetic	Temperature Resistance	sterilizable
PBTP: Polybutylenterephthalate reinforced with 20% glass fiber	antimagnetic	210°C	n.a.

 

PEEK (Rubis)
With 30% fiberglass. Antistatic, ESD safe 10⁵ Ω x cm. Temperature resistant up to 250 C. Not compatible with nitric and sulfuric acids.

Compounding	magnetic	Temperature Resistance	sterilizable
PEEK: Polyetheretherketone reinforced with 30% glass fiber	antimagnetic	250°C	n.a.

 

 

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Coating

PTFE  (EMS)
Superior anti-scratch, non-stick material. Insulation and very high corrosion resistance.

 

ESD   (EMS)

ESD Safe Tweezers from EMS have a soft padded grip of NBR 10E8 ohm resistive.
Compounding: NBR: Nitrile Butadiene Rubber

 

NP - Nickel Plating (EMS)
Superior corrosion resistance to saltwater, alkalies and organic acids.

 

AU - Gold Plating (EMS)
Resistant to ordinary mineral acids, but not to strongly oxidizing acids (such as selenious acid, King acid).

 

Nano (Rubis)
Ultra-modern nanotechnology coating closes even the tiniest of pores on the surface of the tweezers and this innovation has resulted in the cleanest tweezers surface ever produced. Made from the  finest stainless steel grade, the Lotus effect repels dirt, oil, water and other liquids. These tweezers are a perfect companion in the clean room or any sensitive laboratory areas where contaminant free tools is required.

 

Ion (Rubis)
Special coating releases silver ions which acts as an anti-bacterial that neutralises bacteria, germs and other pathogens. These ions act as an anti-bacterial agent which helps the user from contamination of any pathogens. Unlike other methods, the use of ion technology does not give rise to any resistance. Consequently, it represents a risk-free method of guaranteeinghygiene, even at workstations where instruments are used by several different people.Made from finest stainless steel grade, these tweezers are perfect companions for your daily use in the laboratory. (We recommend that safety gloves still be used whenever handling any infectious materials).

 

Grip (Rubis)

This special soft coating provides a non-slip grip and improves the handling of the tweezer. The soft-coating prevents hand fatigue, and protects the hand from heat and cold.

 

 

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DUMONT-Grades

Tailored to specific work areas, Dumont offers their tweezers in various "Grades".
They differ primarly in the fineness of the tips and the materials used.

Biological Grade
The biology brand name identities tweezers especially produced for high precision laboratory work.
Tips on those tools are usually used for work under microscope and are about twice as thin as tips on regular intruments.

Characteristics	available Materials
super thin tips	Inox 08 Dumoxel Dumostar

 

H/P - High Precision Grade
Allow consequently precision work, such as assembly under the microscope and many other applications.

Characteristics	available Materials
fine, thin tips	Inox 02 Dumoxel Dumostar

 

Medical Grade
Made of medical grade stainless steel

Characteristics	available Materials
serrated handles, also available with clamping ring	Inox 08

 

Electronic Grade
Ideal for working in a conductive environment. Available with epoxy-coated handles.

Characteristics	available Materials
strong, thin tips (slightly larger than H/P tips)	Inox 02 Dumoxel Antimagnetic