In chemistry, a retort stand, also called a clamp stand, a ring stand, or a support stand, is a piece of scientific equipment intended to support other pieces of equipment and glassware — for instance, burettes, test tubes and flasks.
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What does clamp mean in science?
1 : a device designed to bind or constrict or to press two or more parts together so as to hold them firmly. 2 : any of various instruments or appliances having parts brought together for holding or compressing something.
What is a clamp holder used for?
A clamp holder or clamp fastener is a piece of laboratory apparatus that is used to secure laboratory clamps, such as extension-type utility clamps, or other attachments to a ring stand or lab frame.
What is a pinch clamp used for in chemistry?
• PINCH CLAMP: used to block off rubber tubing; small clamp. • PIPET/RUBBER BULB: used to draw liquid into a pipet to fill it.
What is an example of a clamp?
The definition of clamp is a device, such as a brace or band, that holds things together. A clothespin used to keep a bag of chips shut is an example of a clamp.
How does a clamp work?
Some types will use a trigger mechanism, whereby the jaws are adjusted using a trigger or lever. Alternatively, some types have a conventional screw that adjusts the clamp. When the screw is rotated, the clamps close around the workpiece, and pressures are applied to keep it firmly in place.
What is boss and clamp?
Photograph of stand (also called clamp stand), 4-prong clamp and boss. The stand is a stiff rod, usually aluminium or mild steel, screwed perpendicularly into a base. The boss is used to connect objects, such as the clamp, to the stand.
What is the function of iron stand?
Function/Use: iron stand supports the iron ring when heating substances or mixtures in a flask or beaker (using a Bunsen burner) clamps can also be used to hold glasswares on the iron ring.
What is a ring clamp?
Ring clamps connect to a ring stand. They come in several sizes and have a multitude of uses: holding a separatory funnel during an extraction, support for a heating mantle, or supporting a glass funnel in gravity filtration.
What is the use of iron clamp in laboratory?
Iron clamp A clamp holder in a lab is used to secure an extension-type utility clamp to a support stand or ring stand. It is also used in some instances to clamp a couple of support rods together, or to clamp an iron ring or other attachment to a metal bar.
What is burette stand and clamp?
Burette clamp is a scientific equipment which used specifically to hold and secure a burette on a stand, so that a burette is fixed and more convenient for the experiment. Burette clamps can be made with many materials such as plastic and cast iron.
What does a burette clamp look like?
Burette clamps are single or double Y-shaped items, with a C-shaped opening, which have spring action clamps. Commonly made or metal (aluminium or zamak) or plastic, usually PE.
What is a double burette clamp?
Double buret clamps hold two burets simultaneously. The clamps do not obscure the buret graduation lines and numbers. The clamps are intended to be attached to either 5/16″ or ½” rod diameter support stands.
What is the type of clamp?
There are many different types of clamps, with each type serving a specific purpose. Cable clamps hold cables or cords together and secure them. Hose clamps hold hoses on the ends of pipe spuds. Hand clamps hold workpieces secure for various work operations.
What is a clamp made of?
Description. C-clamps or G-clamps are typically made of steel or cast iron, though smaller clamps may be made of pot metal. At the top of the “C,” is usually a small flat edge. At the bottom is a threaded hole through which a large threaded screw protrudes.
How do you use a metal clamp?
How does a current clamp measure current?
A clamp meter is a clothespin-shaped instrument that can be clamped around a live wire in order to measure the current it’s carrying. As a measurement principle, clamp meters detect the magnetic field emitted by current flowing in a wire in order to measure the current value.
What is meant by clamping current?
Clamp current is an absolute max value above which damage will occur. The absolute max on all IO pins (but MCLR) is 0.3V outside the rails which will prevent any diode current. Although in many applications you can get away with it, operationally you should avoid any protection diode current.
How does a pressure clamp work?
What are bosses in chemistry?
Biochemical and Organic Simulation System (BOSS) is a general-purpose molecular modeling program that performs molecular mechanics calculations, Metropolis Monte Carlo statistical mechanics simulations, and semiempirical Austin Model 1 (AM1), PM3, and PDDG/PM3 quantum mechanics calculations.
What is a boss in science?
In engineering, a boss is a protruding feature on a work piece. A common use for a boss is to locate one object within a pocket or hole of another object.
What is a boss head in science?
A Boss head is one of the three things that holds a Florence flask or Conical flask on a retort stand. A Boss head is used to keep the clamp in place so if you put a glass holder in between the clamp it doesn’t fall/break.
How do you use a circle clamp?
What is ring stand?
Definition of ring stand : a metal stand consisting of a long upright rod attached to a heavy rectangular base that is used with rings and clamps for supporting laboratory apparatus.
What is burette stand in chemistry?
burette, also spelled buret, laboratory apparatus used in quantitative chemical analysis to measure the volume of a liquid or a gas. It consists of a graduated glass tube with a stopcock (turning plug, or spigot) at one end.