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What is the use of stirring rod in laboratory?
A glass stirring rod, glass rod, stirring rod or stir rod is a piece of laboratory equipment used to mix chemicals and liquids for laboratory purposes. They are usually made of solid glass, about the thickness and slightly longer than a drinking straw, with rounded ends.
Which material is used in laboratory apparatus?
silica
Laboratory glassware is composed of silica. Silica is considered insoluble in most substances with a few exceptions such as hydrofluoric acid.
What is stand and clamp?
Noun. clamp stand (plural clamp stands) (chemistry) An item of laboratory equipment which consists of a metal pole with a solid, firm base, used to hold, or clamp, laboratory glassware and other equipment in place, so that they do not fall down or come apart.
What is 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 the function of test tubes?
Test tubes are widely used by chemists to hold, mix, or heat small quantities of solid or liquid chemicals, especially for qualitative experiments and assays. Their round bottom and straight sides minimize mass loss when pouring, make them easier to clean, and allow convenient monitoring of the contents.
Why is glass used in laboratory?
The general properties of glass Additional advantages to using glass in the lab include its dimensional stability, even at high temperatures, and its transparency. Other advantages include the fact that many sizes of many pieces of laboratory equipment are available, and glass is easy to clean.
What is the purpose of a clamp stand?
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.
What is the iron ring used for?
Iron rings are commonly used in chemistry laboratories for supporting apparatus above the work surface, for example: a tapered item such as a filter funnel or separatory funnel. a clay triangle, which itself supports an item such as a crucible.
What is the use of glass rod in laboratory apparatus?
Glass rods are also used to spread liquid substances on a solid surface. It is preferable to a metal rod because glass is not a good conductor of heat and metal is. Metal has free electrons.
Why are glass rods used instead of metal rods?
Glass rods are also used to spread liquid substances on a solid surface. It is preferable to a metal rod because glass is not a good conductor of heat and metal is. Metal has free electrons. Therefore, in metals, conduction takes place due to the atomic vibration and the drift of the free electrons.
What kind of equipment is a test tube holder?
Test tube holder. The test tube holder is a piece of laboratory equipment that is used to hold test tubes. They are made out of metal and are used by squeezing the handles to open the other end, and inserting the test tube.
What kind of equipment is used in a laboratory?
Test tube racks are used for holding test tubes upright when they contain chemicals, and also hold test tubes upside down to dry. They can also be used to line up several test tubes to be used as collection containers in a distillation. Laboratory tripod is a three-legged equipment, generally used as a platform of some sort.