Lab safety

What should you do if you spill a chemical in the lab?

Report it immediately to your lab instructor or UGTA for proper cleanup instructions.

Are food and drinks allowed in the laboratory?

No, food and drinks are strictly prohibited in the lab.

When should you wash your hands in the lab?

Wash your hands with soap and water before AND after laboratory work.

What is the default PPE you should wear in the lab?

Lab coat, gloves, eye protection, and masks (unless instructed otherwise).

Should you touch specimens or solutions with your fingers, even if gloved?

No, never touch specimens, pipette tips, or solutions with your fingers unless specifically directed.

How should you mix chemicals in a test tube?

Cover the mouth of the tube with parafilm, then gently invert while holding your gloved finger against the parafilm.

What is the correct way to dilute acids?

Always drip acids slowly into water or an aqueous solution—never pour water into concentrated acids.

Can you return unused chemicals to stock bottles?

No, discard unused chemicals into the appropriate chemical waste container.

What should you do to avoid cross-contamination of solutions?

Use a fresh pipette, cylinder, weigh boat, etc., for each reagent when in doubt.

How should you dispose of broken glass?

Place it only in the designated 'broken glass' container.

Where should sharp objects like razors or syringes be disposed of?

In the red 'sharps' container—not in regular garbage or biohazard bins.

How should you clean glassware after use?

Wash with soapy water (Alconox detergent), rinse thoroughly with clean water, and air dry or hand dry.

What should you do with open flames when not in use?

Turn off burners or other flame/heat sources when not in use.

How should you handle hot water baths?

Use tongs or provided materials to avoid direct contact with hot metals or glass.

What should you do with long hair in the lab?

Always tie it back to prevent it from falling into flames, chemicals, or specimens.

Can you take stock solutions to your lab bench?

No, measure the quantity at the stock station and bring only what you need to your bench.

What type of water should you use if the procedure specifies deionized or distilled water?

Use only deionized or distilled water—never assume tap water is acceptable.

What should you do if you’re unsure how to use equipment or reagents?

Ask your lab instructor or UGTA for guidance.

What should you do if you need to leave the lab during a protocol?

Inform your instructor or UGTA, remove PPE, dispose of gloves properly, and put PPE back on when you return.

Is this list exhaustive for lab safety precautions?

No, always check the lab manual and bench for additional precautions or procedures.