Clamps
Adjustable devices designed to securely hold two objects together or to hold an object in place; used with standard-taper and ball-and-socket joints, glass and tubing assemblies, and with ring stands. Available as plastic joint clips, stainless steel pinch clamps, and taper clips.
A laboratory clamp is an essential piece of equipment used to support and secure labware and other laboratory apparatus such as flasks, reaction vessels, tubing, thermometers, probes, columns, funnels, and overhead stirrers.
Some laboratory clamps consist of a shaft and boss head, secured with hand-tightened thumbscrews, knurled nuts, or wingnuts onto a supporting rod, stand or scaffold. They may also include two- or three-pronged, adjustable closing jaws designed for gripping objects safely and securely.
Laboratory clamps are constructed of metals such as stainless steel, nickel-plated zinc, plated brass or diecast aluminum alloy for enhanced chemical, heat, and corrosion resistance. However, some components such as the adjusting screws may be made of plastic, and the prongs may also be lined or covered with cork, plastic, glass-fiber, or rubber for enhanced grip with minimal damage or breakage.
Laboratory Clamp Styles and Designs
• Universal, general-purpose clamps that are fully adjustable for accommodating and securing a wide range of items of different sizes such as columns and thermometers
• Retort clamps for securing round-bottom flasks and similar glassware
• Fork clamps for securing and supporting cone-and-socket ground glassware joints
• Three-prong extension clamps, sometimes available with spring-loaded jaws, for holding irregularly shaped or outsized objects
• Specialized clamps for securing burettes and condensers or reaction vessels
• Chain clamps, which incorporate a circular, adjustable chain loop to hold cylinders and beakers
Cole-Parmer Standard 2-Prong Extension Clamp, Dual, Large, Nickel-Plated Zinc
Designed to securely hold a large variety of glassware and apparatus. Ideal for irregularly shaped objects. Choose single adjustment style for standard use where one prong or "finger" is adjusted using a wing nut, while the other prong remains stationary or for a more versatile clamp choose the dual adjustment style. Utilizing thumbscrews, both prongs are easily adjusted over a wider range. Available in 3 sizes, small, medium, and large. Dual adjustable clamps are offered in either stainless steel or nickel plated zinc. Supplied with non-slip vinyl sleeves or for temperatures above 212°F (100°C), fiberglass covers.
MSC Clamp-On Vise 3"" Swivel Base
3" Jaw Width x 2-1/2" Jaw Opening Capacity, 2-5/8" Throat Depth, Bench & Pipe Combination Vise 3/8" Max Pipe Capacity, Swivel Base, Clamp-On Attachment, Cast Iron
McMaster-Carr PINCH CLAMP 21/32" TO 25/32"
Vibration-Resistant Pinch Clamp, Tight-Seal,9/32" x 0.024" Band, 21/32" to 25/32" ID, packs of 25
Chemglass Life Sciences Clamp, Column, Large, 121mm to 140mm Clamping Range
Clamp, Column, Large, 121mm to 140mm Clamping Range. Ideal for Chromatography columns and large cylindrical glassware, the column clamp is constructed of stainless steel. Large, flat thumb screw on the worm drive permits tightening and removing.
