Table of Contents
What does a test tube holder measure?
A test tube holder is used to hold test tubes. It is used for holding a test tube in place when the tube is hot or should not be touched. Additionally, while using a test tube holder, the proper distance between the test tube holder and the top of the test tube is approximately 3 centimetres. …
What does a test tube rack used for?
A test tube rack is a piece of laboratory equipment used to hold multiple test tubes upright at the same time. They are especially useful for organizing test tubes when different solutions are being worked on or collected at once.
How do you measure the volume of a test tube?
Fill Inner diameter of tube together with Length of tube and hit the Calculate button to calculate and display it in Volume field. Hit reset button to clear the fields. The Volume field is calculated from the formula: Volume (V) in ml = (diameter * diameter * Pi * Length) /4000.
What is the main purpose of crucible tongs?
Crucible tongs are scissor-like tools, but instead of having two blades, these tools are replaced with two pincers or pieces of metals that concave together, which allow the users to grasp a hot crucible, flasks, evaporating dishes, or even small beakers.
What is test tube stand and its uses?
Test tube stand or rack is used to hold tubes in upright and aligned position, for easy handling of tubes, and to prevent breakage or spillage. It is an essentialtool in any chemistry or biology lab.
What size are test tubes?
Package of 12 of our general purpose ‘standard’ Test Tubes, 15 mm x 150 mm (17 ml capacity).
What does a Scoopula do?
Scoopula is a brand name of a spatula-like scoop utensil used primarily in chemistry lab settings to transfer solids: to a weigh paper for weighing, to a cover slip to measure melting point, or a graduated cylinder, or to a watch glass from a flask or beaker through scraping.
What do tongs measure?
A tong line pull gauge measures true force (force/pounds), so what you see on the gauge is exactly what’s being applied to the pipe. Basically, it’s the what-you-see-is-what-you-get gauge.
What do Beaker tongs do?
Use beaker tongs to handle hot beakers. These nickel-plated steel tongs are 25 cm (10″) long and have plastic coated jaws that open up to 11 cm (4.5″). They can hold beakers ranging from 100 ml up to 1000 ml.
What are the uses of a test tube rack?
Convenience and Safety in Performing Experiments. Many science fair projects employ test tubes in various ways.
What is a test tube rack used for in a laboratory?
Test tube racks are laboratory equipment used to hold upright multiple test tubes at the same time. They are most commonly used when various different solutions are needed to work with simultaneously, for safety reasons, for safe storage of test tubes, and to ease the transport of multiple tubes.
What is the function of a test tube holder?
A test tube holder is a piece of metal that is opened by squeezing the handle for grabbing test tubes from the very far end. The main purpose of a test tube holder is to provide insulation in case reaction is taking place in the test tube and may burn or freeze the user.
What is the function of test tubes?
Test tubes are widely used by chemists to handle chemicals, especially for qualitative experiments and assays. Their spherical bottom and vertical sides reduce mass loss when pouring, make them easier to wash out, and allow convenient monitoring of the contents.