Now that you are able to identify the common safety equipment within a laboratory setting, it's time to review some rules for conducting yourself safely in the laboratory. Click through the tabs below to read about common safety rules, handling chemicals, and responding to accidents.
Common Safety Rules
Handling Chemicals
Responding to Accidents
Here is a list of common safety rules. Some of them are common sense, but some may be a little surprising. Take some time to thoroughly review them before proceeding (with caution) into the laboratory.
- Do not attempt labs that have not been authorized by your teacher.
- Always read the lab instructions thoroughly before performing the lab.
- Always have someone available to help in case of emergency or accident.
- Never eat, drink, chew gum, or smoke while performing a lab.
- Always wear a protective apron over your clothing.
- Know where all of the safety equipment is and how you use it. This includes goggles, gloves, fume hood, fire extinguisher, shower, and eye wash (or sink).
- Wear tight fitting clothes and closed-toe shoes; tie long hair back.
- Always wear goggles and remove your contact lenses.
- Dispose of broken glass in another container, not loose in the trash can.
- Keep your lab area free of clutter.
- Stay calm and cool in the lab--no joking around or running.
As you perform labs, you may have to handle chemicals. It is important to realize that careful handling of chemicals will prevent most accidents.
- For all chemicals you use, refer to the MSDS (Material Safety Data Sheets) and review the safety information for each chemical.
- Read the label of all chemicals you use. Double check that it is what you were after.
- Label all chemicals clearly and accurately once you transfer them from the original storage container somewhere else.
- Always replace the stoppers or lids on storage containers after you transfer chemicals.
- Once your laboratory is complete, do NOT return unused chemicals to their original storage containers.
- Dispose of used and unused chemicals in the proper waste receptacles or containers.
- When weighing chemicals, never place the chemical directly on the scale. Use proper weigh boats or papers.
- While heating a substance, never leave it unattended. Never heat a substance in a closed container.
- Be careful when working with potentially hot materials or chemicals.
- Always add acids to water; never add water to acids.
- Clean your work area once you are finished. Put away the equipment and dispose of necessary items properly.
- When using glass thermometers or tubing, use lubricants before trying to force tubes into a rubber stopper.
Even if you conduct yourself perfectly and follow all the rules and protocols, accidents may still happen. Follow these protocols when dealing with accidents in the lab.
- Chemical Spills:
- On a work surface: First, extinguish any flames and then clean up the spill immediately. If you are working with an acid, use baking soda to neutralize it first. If you are working with a base, pour vinegar on it to neutralize it. Make sure you are wearing gloves!
- On clothing or skin: Immediately move to the safety shower and remove all contaminated clothing. This is NOT the time for modesty. Flush the entire area with water and clean with a mild soap. It is important to check the MSDS and follow any instructions for medical assistance, if necessary.
- In the eyes: Proceed to the nearest sink or eye wash station and flush the eyes for at least 20 minutes. If you have glasses on, do NOT touch the glasses to remove them. You should seek medical attention after chemicals get in the eyes.
- Chemical Ingestion: Call 911 or the Poison Control Center immediately at 1-800-222-1222 and follow their advice. Check the MSDS for further information.
- Burns: Place the burn under cool running water for 20 minutes and seek medical attention, if necessary.
- Cuts and Wounds: Treat the wound as you would a wound outside the laboratory. If for some reason a chemical has gotten into the wounded area, follow the procedures for spills on your skin. Medical attention may be needed as well.
- Fire: If the flame is not intentional, cover the flame with something that is larger than the fire (e. g., a plate over a beaker) to extinguish the flame. If that does not contain the fire, use the fire extinguisher. If the extinguisher is insufficient, evacuate the laboratory or home and call 911.
Question
What should you do if a substance in the lab splashes into your eyes?
Proceed to the nearest sink or eye wash station and flush your eyes for at least 20 minutes.