SS= stainless steel, NM-SS= non-magnetic stainless steel. CS= carbon steel, TI= titanium

Tweezers - Selector

A Comprehensive Overview of Tweezer Types with Links

Dumont Dumostar Newly developed alloy, non-magnetic and non-corrosive, resists temperatures to 550°C, extra hard tips but very elastic in nature, 8 styles.	Dumont Biology SS, NM-SS, CS, Ti. Available in 4 styles and many finishes and metals. Finest Tips for handling extremely minute, delicate material and grids.	Dumont High Precision SS, NM-SS, PTFE coated SS, CS. Available in 16 styles and many finishes. Suitable for most general laboratory use.	PELCO® Pro Wire Cutting CS. Trim handle grids, cut fine wires in tight places, 5 cutting tips available.
Dumont Medical SS. Can be sterilized at 180°, satin finish, machined grips, 3 styles, one style available with clamping ring.	Dumont Clamping Ring NM-SS (Dumoxel). Can be sterilized at 180°, 2 styles. Finest Tips for handling extremely minute, delicate material and grids.	Dumont Electronic and Industrial SS, NM-SS. 13 styles. All but 2 are epoxy coated (blue for SS and green for NM-SS) with exposed, non coated tips.	Aquarius Tweezers SS, NM-SS. 5 styles. Anti-acid, work-hardened stainless steel tips, equal in strength to flame-hardened carbon steel.
Dumont Reverse (self-closing) SS, NM-SS. 11 styles and various finishes and composition. Biology and High Precision.	Dumont Anti-Capillary Dumont Anti-Capillary Reverse (self-closing) SS, NM-SS, 4 styles. Reverse with one bent tip to avoid water capillarity	Dissecting Forceps Over 20 styles of dissecting forceps	Economy SS. 2 styles Good standard utility use but not honed for EM grid handling.
PELCO® Pro Mini NM-SS. 3 styles. Fine tipped tweezers without the excess bulk of long tweezers. Ideal in tight spaces.	PELCO® Pro Slim NM-SS. 7 styles. Super slim tweezers, precise, fine tips. Especially suitable for reaching in tight spaces, or for working near heat sources.	Heavy Duty, Reverse (self-closing) SS, NM-SS. 2 styles. Larger utility size with plastic grips and rounded tips for various laboratory functions.	Wafer, Component, Cover Glass SS, NM-SS, PTFE coated SS, Ni coated SS. 11 styles. Superb quality and craftsmanship. Large area tip for delicate grasping
PELCO® Pro High Precision Tweezers 11 styles. Anti-acid, non-magnetic stainless steel.	PELCO® Pro Locking Tweezers 5 styles. Anti-acid, non-magnetic stainless steel.	PELCO® Pro Reverse (self-closing) NM-SS. High precision reverse action. For high precision work such as in microscopy and assembly applications.	PELCO® Pro Flat and Pad Tip SS. 9 styles. Smooth, scratch-proof tips, useful for handling delicate and pressure sensitive parts.
PELCO® Pro Gold Plated Tweezers 10 styles. Anti-acid, non-magnetic stainless steel, plated with 2 microns of pure 24-carat gold.	PELCO® Ceramic Tip SS handles with zirconia ceramic tips. Anti-magnetic, non-conducting, chemical resistant, heat resistant (1000° C), lightweight.	Zirconia Ceramic Tweezers 4 styles, smooth surface, low friction coeeficient, light weight, fully anti-magnetic, contamination-free, solder-resistant, wear-resistant and non-conductive (thermally / electrically)	PELCO® Pro ESD Safe Epoxy, Precision Tweezers, 8 styles
PELCO® Pro Superalloy Tweezers Ni-Cr-Mo alloy, 8 styles. Fine and UltraFine	PELCO® Pro High Precision DLC Coated Tweezers Diamond Like Carbon coated tips. 8 styles.	DUMONT Titanium Ti. 6 styles. Light weight, strong tweezers. Totally non-magnetic.	DUMONT Carbon Steel Carbon steel (Rockwell 60) is one of the hardest materials used to manufacture tweezers. Wear resistant
PELCO® SV Carbon Fiber Tipped PELCO® SV Replaceable Tip Carbon Fiber Conductive, “Carbofib” tips and non-magnetic SS grips. Sturdy but non-scratching. Outstanding chemical resistance.	PELCO® Pro Soft Tip Tweezers Scratch proof, polyamide/carbon fiber tips, specially designed to handle sensitive parts, 4 styles.	ESD-Safe Carbon Wafer Handling NM-SS (matt) grips. 5 styles. Conductive carbon fiber/PVDF tips. Sturdy but non-scratching. Outstanding chemical resistance. Replaceable tips.	Cantilever NM-SS. 1 style. Designed for handling AFM cantilevers / probes.
Dumont 70, Manipulating, Sorting and Placement CS, SS, Ti. 5 styles. Long, thin with serrated tips. Ideal for picking up and placing.	PELCO® SV Carbon Fiber Reinforced Carbon fiber/PVDF reinforced. 6 styles. Anti-static, ESD safe, cleanroom compatible.	PELCO® Ergonomic, ESD, Soft Grip NM-SS with soft plastic grips. 7 styles. Non-magnetic precision tweezers with soft ESD safe ergonomic grips.	PELCO® ESD Ergonomic NM-SS with foam grips that are ESD safe and clean room safe. 7 styles plus wire cutter/tab nipper.
	Plastic Celcon, Ryton, glass-filled Delrin, Fluorocarbon (CTFE). 29 styles. Tips include sharp, flat and wafer. Most are chemical resistant, some are static dissipative (ESD safe) and temperature resistant.	Industrial, Economy NM-SS. 14 styles. Fine brushed finish, a value for the price. Not intended for TEM grids.

Vacuum Tweezers
(Vacuum Pick-Up)

SEM Grippers

Tweezer Accessories

Our offering of tweezers meets a multitude of applications in science, research and industry. Observe the high quality DUMONT^® tweezers increased in styles and numbers.

Below is a list depicting metals and the codes used to distinguish them.
The representative tweezers’ groups are listed above for a fast link to the specific types.
The tweezer points measurements should be considered for your application. For example, the sharpest, smallest point (new in this catalog and on our web) is number 505-U, which is stainless steel with points of size 0.025 x 0.005mm. This is a special tweezer suited, for example, to pickup EM grids off of very smooth surfaces. Most applications will not require such a fine tweezer and your choices are manifold.
Dumont Dumostar™ tweezers are the hardest tweezer. They are non-magnetic with corrosion resistant steel (sea water, HCl, H3PO4, HNO3, H2SO4). They are resistant to neutral and alkaline environments. DUMOSTAR™ from DUMONT is superior to the best stainless steel. Tip hardness is progressive and reaches its peak in the zone of a style 5 tweezer with tip hardness in the Rockwell range of 63-64.
Even non-magnetic steel alloys can exhibit magnetism when exposed to strong magnetic fields. Only titanium or plastic tweezers are fully non-magnetic.
Abbreviations for the metals and materials:

Alloys and Materials

DS DUMOSTAR™
An alloy blend of steel, chromium, nickel, and cobalt, elastic in nature for “flexible fatigue resistant tips”, resists temperatures to 550°C, and is non-magnetic and anti-corrosive. The best overall material for tweezers. Rockwell 63-64.

SS Stainless Steel
High tensile strength chromium/carbon steel alloy (various compositions) provides for good corrosion and stain resistance, second in hardness only to DUMOSTAR™ Note: stainless steel can rust under some circumstances.

NM-SS Non-magnetic Stainless Steel
Same properties of stainless steel with additional nickel to create the non-magnetic characteristic.

NM Non-magnetic
A standard alloy composed of C, Cr, Ni and Mo. It offers a good resistance to corrosion thanks to its high concentration of Mo and is 80% non-magnetic, but it is not as hard as NM-stainless steel. NM is resistant up to temperatures of around 400°C (DIN 50 914) and is suitable for autoclave sterilization at 270°C.

Ti Titanium
Flexible tips, non-magnetic, light weight (33% less than stainless steel alloys), durable, low particle shedding compared to stainless steel, extremely acid and stain resistant, hypoallergenic. Good for use around sensitive electronics or high magnetic fields. Will resist temperatures in excess of 400°C. Rockwell 36.

CS Carbon Steel
Very durable, hard material that is less flexible and more brittle than DS, SS and Ti. Highly magnetic, will stain and rust easily. Rockwell 60.

DUMOXEL SS Stainless Steel Alloy
Highly corrosive resistant and provides soft, flexible tips. More stain resistant than stainless steel, Rockwell 63 hardness. 95% anti-magnetic, resistant to temperatures above 400°C. Can be autoclaved.

INOX SS Stainless Steel Alloy
Composed of a special mix of Carbon Steel and Chromium. Provides soft, flexible tips, Rockwell 55.

Plastics
Note: For complete description of plastic materials for tweezers, go to the beginning of "Plastic Tweezers".

Tweezer Tip Designations
Biology smallest, sharpest points
High Precision for needs which do not require the sharpest point
Electronic normal manufacturing operations
Style PELCO^® EMX Designed for EM grid handling

Point Sizes/Shapes listed by each tweezer, examples: