Measurement tools in the chemical laboratory

Lab tools

The methods of analyzing and measuring in chemistry, at the present time, have become more advanced in terms of precision and variety. Humans have become dependent on them in all the fields of life including the environment, food, health, agriculture, industry and others. The importance of measurement in chemistry is due to the fact that it provides us with necessary information and quantitative data to allow us to use the required procedures and the appropriate practices.

Measurement: 

the comparison of an unknown quantity with another quantity of its kind in order to know the number of times which the first includes the second.

Tools in the chemical laboratory

Chemical experiments are carried out in a place with certain specifications and conditions. This place is called a lab or a chemical laboratory. 

A chemical laboratory requires appropriate safety procedures, a source of heat like a bunzen flame , a source of water, and places to store chemicals, tools, and various apparatuses.

It is necessary to know the correct method to use each of them and how to store them.The following is a detailed display of some of the tools and apparatuses that are used in the chemical laboratory and why it is used:

Pipette:-

 the Pipette is along glass tube opended from the two sides.

1-glass pipettes

2-micro pipettes

Test tubes:-

small,heat resisitant glass tubes.

uesd to the mixing and testing of small amounts of chemicals.

the sensitive balance:-

Is used to measure the mass of substances. Balances differ in their shapes and designs.

 Digital balances are the most common. 

The top loading balance is the most commonly used of the digital balances figure . 

The special instructions on how to use the balance are most likely fixed on one of its sides. These instructions should be read very carefully before using the balance.

Burette :- 

A burette is a long glass tube with two openings. One of the openings is used to fill the burette with a solution and the other opening has a fixed valve to control the amount of solution taken from it. 

The burette is fixed on a stand with a special metal base the vertical shape to preserve through the experiments. 

The burette is usually used in the experiments that require a high degree of accuracy in measuring such as identifying the volumes of liquids during titration. In the burette, the graduation zero is close to the upper opening and ends before the valve.

Beakers :-

 transparent beakers made of Pyrex-resesting to heat- used for mixing the liquids and solutions because there are graduated types with limited capacities, besides, they can be used for transferring a known volume of liquid from place to another.

Graduated Cylinder :- 

A graduated cylinder is made out of glass or plastic. It is used to measure the volume of liquids where it is more accurate than flasks. There are different capacities of graduated cylinders.

Flasks :-

Flasks are one of the types of glass tools used in a chemistry lab. There are different types of flasks according to its function: 

1-Conical flask : 

It is made out of Pyrex glass. Their types differ accordingly with the difference in flask capacity. They are used in the titration process. 

2-Round-Bottom Flask :

 It is usually made out of Pyrex glass. Their types differ accordingly with the difference in flask capacity. They are used in the processes of preparation and distillation. 

3- Volumetric Flask : 

It is made out of Pyrex glass. On its top, it has a mark that determines the flask volume capacity and it is used for preparing the standard solutions (with known concentrations very accurately).