Q&A

When a glassware has a marked capacity of 100ml does it mean that it has to be filled to the brim?

When a glassware has a marked capacity of 100ml does it mean that it has to be filled to the brim?

If a beaker has a rated capacity of 100 mL, it does NOT mean that it has to be filled to the brim.

What is the glass tube called in chemistry?

Flasks are narrow-necked glass containers, typically conical or spherical, used in a laboratory to hold reagents or samples. Examples flasks include the Erlenmeyer flask, Florence flask, and Schlenk flask.

What is a disposable device used to dispense a small amount of a liquid 3 mL or less?

Pipettes
About Pipettes. A pipette is a laboratory instrument used to measure out or transfer small quantities of liquid, in volumes of milliliters (mL), microliters (μL).

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What is a glass tube used for in science?

Laboratory glass tubingis used in many laboratories or industrial workplaces to connect other items of glassware or equipment and to convey or deliver chemicals, solvents, liquids, gases and other products. Lab glass tubing is normally manufactured from borosilicate glass for the most demanding applications.

What is TC and TD glassware?

Glassware designed to contain, like graduated cylinders and volumetric flasks, are usually marked with a TC. Glassware designed to deliver, like pipets and burets, are marked with a TD. These pieces of glassware account for the small amount of liquid that remains behind.

How do you read liquid measurements?

Place the graduated cylinder on a flat surface and view the height of the liquid in the cylinder with your eyes directly level with the liquid. The liquid will tend to curve downward. This curve is called the meniscus. Always read the measurement at the bottom of the meniscus.

What is a small glass tube called?

Boiling tube. Centrifuge tube. A test tube, also known as a culture tube or sample tube, is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top and closed at the bottom.

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How is glass tubing measured?

A word about tolerances: glass tubing is called out by the outside diameter and references the wall thickness. The nominal ID tolerance of borosilicate tubing is generated by the sum of the OD tolerance and twice the wall tolerances.

What is test tube used for?

Chemical reaction
Test tube/Uses

What is a ring stand used for?

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.

Is a test tube TC or TD?

Calibrated pipets, burets, syringes and droppers are T.D. glassware; volumetric flasks and cylindrical or conical graduates are T.C.

What is the measurement of mL?

A milliliter, abbreviated as ml or mL, is a unit of volume in the metric system. One milliliter is equal to one thousandth of a liter, or 1 cubic centimeter. In the imperial system, that’s a small amount: . 004 of a cup .

What is the scale of a 500 ml graduated cylinder?

graduated cylinder is divided into 0.1 mL increments, and the scale of a 500-mL graduated cylinder is divided into 5 mL increments. The graduated cylinder scale is a ruled scale, and it is read like a ruler.

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What is the meniscus of a glass cylinder?

As a general rule, the bottom of the meniscus is taken as the liquid level in a glass cylinder (or any other volume measuring device made from glass).  If the cylinder is made from plastic, the liquid surface is flat (horizontal). There is no meniscus—cylinder on the right in the following figure.

What is the size of a 100 ml stem?

…greater mechanical strength Capacity 100 mL Stem has white graduations from 0 to 1.5 mL in 0.1 mL divisions; body is graduated from 1.5 mL to 5 mL in 0.5 mL divisions, from 5 mL to 10 mL in 1 mL divisions and at 15, 20, 25, 50 and 100 mL . Dimensions: O.D. 43.5 mm to 44.5 mm…

How to find the volume of liquid in a graduated cylinder?

The volume of liquid in a graduated cylinder is obtained directly by reading the calibrated scale. In most situations, the liquid will be water or an aqueous solution. If the cylinder is made from glass, the liquid surface is curved (U-shaped) rather than