For exact volume measurements of liquids. Pipet on the left is a Volumetric pipet. It has only one graduation for delivering one exact volume. Pipet on the right is a Mohr pipet. It has graduations for delivering any number of exact volumes. |
Pipet
 |
There are several styles of fillers used to draw liquids into a pipet. A standard pipet bulb is the most commonly used one.
Never draw a liquid into a pipet with your mouth. |
Pipet filler
 |
Used in conjunction with a vacuum connection to a water faucet to speed up filtration. |
Filter flask 
|
The Erlenmeyer flask is a common flask in chemistry lab. It is used to contain reaction solutions. |
Erlenmeyer flask
 |
The rounded bottom of the florance flask makes it ideal for boiling liquids. It also makes this flask easy to tip over when sitting on the lab table. |
Florance flask 
|
The volumetric flask is used to make solutions. It has a precise graduation line in the neck of the flask. A solute is placed into the flask, then the solvent is used to bring the total volume up to the graduation. |
Volumetric flask
 |
Beakers are the most versatile glassware in the lab and can be used for just about anything. The volume graduations on beakers should be used only for "ballpark" estimates. |
Beaker
 |
Used to make accurate measurements of liquid volumes. The bumper ring on larger
cylinders is to prevent breakage if tipped over. Keep it near the top. |
Graduated cylindar
 |
This dish is used to recover dissolved solids by evaporation. While it can be heated, it should not be used for "strong" heating. |
Evaporating dish
 |
A watch glass can be used like an evaporating dish for very small amounts of liquid. It can also be used to cover beakers. |
Watch glass
 |
When attached to the ring stand, this iron ring is used to support glassware above the lab table. |
Support ring
 |
When attached to the ring stand, this clamp is used to hold a large test tube or Florance flask above the lab table. |
Utility clamp
 |
Crucibles are used as a container when something requires "strong" heating. |
Crucible and cover
 |
These tongs are used for picking up crucibles and crucible covers only. |
Crucible tongs
 |
Used as a support for beakers when placed across a support ring. |
Wire gauze
 |
Used to light a lab burner. Not a toy noisemaker during lab. |
Striker 
|
Used to grind solids into powders. |
Mortor and Pestle
 |
Used to hold test tubes for short periods of "gentle" heating. |
Test tube holder
 |
When lined with filter paper, used to filter suspended solids from a liquid. |
Filter funnel
 |
Used for rinsing solids out of a container when filtering. |
Wash bottle 
|
Used to transfer solids from their original container to a scale for weighing. |
Chemical spoon 
|
Used to close hoses by pinching them together. |
Hose clamps
 |
Desiccators are used to provide a dry environment for a crucible or substance to cool down. This is critical in quantitative work where moisture can affect mass results.
A common dessicant is anhydrous calcium chloride. Colored indicator crystals are usually included to tell the user the condition of the dessicant. A gray color in the crystals usually indicates that the dessicant is dry and will absorb moisture. A pink color usually means that the dessicant is "hydrated". When this happens, the water can be removed by heating it in an oven.
|
Desiccator
|