Glass laboratory apparatus are usually resistant to acids. Wood laboratory apparatus are usually used for mixing dry elements. Metal laboratory apparatus are for mixing liquid elements and rubber apparatus are usually used for testing and measuring.
In a laboratory, a magnifying glass is most often used to enhance things that are usually invisible to the naked eye. Using a magnifying glass allows one to view cells in a sample of blood, for example. to see things closer
A pipette is used to accurately measure the volume of a liquid in the laboratory. In the school laboratory the pipette is usually a glass bulb with a glass tube on either end. There is a line on the tube to indicate how high to fill the pipette to measure the required volume.
Assuming you mean a "petrie" dish this is a small flat laboratory dish made of thin clear pyrex glass about 10 cm diameter and 1 cm high with a tight fitting glass cover. It is used for growing cultures in a laboratory.
In a laboratory a condenser is a piece of laboratory glassware used to cool hot vapors or liquids.  A condenser usually consists of a large glass tube containing a smaller glass tube running its entire length, within which the hot fluids pass.
Um, you probably shouldn't have had glass around the open spark plug hole in the first place. this could make it hard for your spark plug to fit into place, or even send the spark to the cylinder. You will have to take apart the head and remove the glass depending on how big the shard, or piece is.