Lab Safety Things to Know

• Lab Safety Rap

Never heat a liquid in a closed container

Stoppers are OK if there is no heat

No stoppers

More than one test tube can be heated at a time.

H2O

Acid

Pour acid into water.

PAW!

Hot plate

Hot water bath – used for heating volatile (easily flammable) liquids.

ØNo volatile liquids With a Bunsen burner

Scalpel hold like a pencil.

Cut away from yourself and others.

Culture only nonpathogen bacteria.

Nonpathogen means NOT disease causing

All cultures must be disposed of by the teacher.

Bacteria cultures

Pipette –precise measurement for tiny amounts

Dropper pipette –Measurement not precise

Micropipette

Graduated cylinder – measures volume in milliliters, ml.

Meniscus – Curve of liquid. Measure from the bottom of the curve.

Graduated Cylinder