# What is a graduated cylinder do?

## What is a graduated cylinder do?

Graduated cylinders are long, slender vessels used for measuring the volumes of liquids. They are not intended for mixing, stirring, heating, or weighing. Graduated cylinders commonly range in size from 5 mL to 500 mL. Some can even hold volumes of more than a liter.

### How should you look at the graduated cylinder?

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.

As its name indicates, it is a glass cylinder with marks along the side similar to those on a measuring cup. The volume is read by looking at the top of the fluid from the side and reading the mark on the glass from the lowest portion of the lens-like meniscus of the liquid.

The graduated cylinder cannot be heated, nor can it be used to measure the superheated liquid, and it is forbidden to carry out any chemical reaction or formulate the solution in the cylinder. This is due to the feature of all glass measuring cylinders.

In the 25-mL graduated cylinder, first subtract 25 mL – 20 mL = 5 mL. Next, count that ten intervals are between the labeled graduations. Therefore, the scale increment is 5 mL/10 graduations = 0.5 mL/graduation.

### How many decimal places is a graduated cylinder?

decimal places
The 10-mL graduated cylinders are always read to 2 decimal places (e.g. 5.50 mL) and the 100-mL graduated cylinders are always read to 1 decimal place (e.g. 50.5 mL). so that the line at the bottom of the meniscus gives the most accurate reading.

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Why is it called a graduated cylinder?

What are the two main things to remember when reading a graduated cylinder?

To correctly read a graduated cylinder, the surface at the center of the meniscus must be read, not the top of the ring of liquid clinging to the wall of the graduated cylinder. For most liquids, this “center” will be the lowest point of the meniscus.

## What does a flask look like?

Round-bottom flasks are shaped like a tube emerging from the top of a sphere. The flasks are often long neck; sometimes they have the incision on the neck, which precisely defines the volume of flask. It is a flask with an approximately pear-shaped body and a long neck with a circumferential fill line.

### Can a graduated cylinder be heated?

Can a cylinder be heated? Yes, although the glass models, which are made of borosilicate glass, can take more heat than the plastic cylinders. Borosilicate glass cylinders can withstand temperatures of 329°F (165°C) and are also resistant to thermal shock.