Lab Safety Assessment

Beaker

Glass or plastic; common sizes are 50 mL, 100 mL, 250 mL, 400 mL; glass beakers may be heated

Where is the beaker found in the lab?

Cabinets to the right and left of table 3 and above table 2

Florence flask

used for mixing of chemicals. The narrow neck prevents splash exposure.

Where is the florence flask found in the laboratory?

Above table one, the right cabinet

Graduated cylinder

Glass or plastic; common sizes are 10 mL, 50 mL, 100 mL; used to measure approximate volumes. Must not be heated.

Where are the graduated cylinders found?

They are found above table two,

Crucible tongs

iron or nickel; used to pick up or hold small items

Where are the crucible tongs found?

in the storage closet.

Erlenmeyer flask

Holds solids or liquids that may release gases during a reaction or that are likely to splatter if stirred or heated.

Where are the erlenmeyer flasks found?

Above table 2, middle cabinet

Ring stand

Metal rod, fixed upright in a heavy metal base; has many uses as a support. Rings and clamps can attach to it.

Where are the ring stands found?

Lined up on the window sill.

Test tube holder or TONGS

Spring metal; used to hold test tubes in a vertical position

Where are the test tube holders found?

found above wash bottles/next to chemical clean up station (cabinet)

Watch glass

glass; used to cover an evaporating dish or beaker

Where are the watch glasses found?

found above wash bottles/next to chemical clean up station (cabinet)

Test tube rack

wood or plastic; stores/holds test tubes in a vertical position

Where are the test tube racks found?

Found above lab notebooks and small tv (cabinet)

Buret/test tube clamp

to hold test tubes and be fastened to a ring stand

Where are the test tube clamps/buret found?

found in storage closet

Wire gauze

used to spread the heat of a burner flame

Where are the wire gauze found?

found in storage closet

Mortar and pestle

porcelein; may be used to grind crystals and lumpy chemicals into powder

Where are the mortar and pestle found?

found above distilled water (in cabinet), left of lab notebooks

safety goggles

Plastic; must be worn at all tiems when working in the laboratory.

Where are the safety goggles found?

found in the cabinet (on the floor) of table three

Beaker tong

used to carry and move hot beakers

Where are the beaker tongs found?

found in storage closet

Volumetric flask

used to prepare a solution with a known, precise volume. - used to measure volume

Where are volumetric flasks found?

found above table 1 (right cabinet), with the florence flasks

Hot plate

used to heat substances

Where are the hot plates found?

found in storage closet

Evaporating dish

used to contain small volumes of liquid being evaporated

Where are the evaporating dishes found?

found above table 2 (cabinet)

clay triangle

wire frame with porcelain supports, used to support a crucible

Where are the clay triangles found?

found in storage closet

Bunsen burner

heats substances with a hot flame

Where are the bunsen burners found?

in storage closet bottom shelf

Graduated pipet

glass; common sizes are 10 mL, 25mL; used to measure solution volumes; less accurate than a volumetric pipet

Where are the graduated pipets found?

in storage closet

Safety shower

used to rinse of chemicals

Where is the safety shower found?

to the right of the fume hood.

funnel

glass or plastic; common size holds 12.5-cm diameter filter paper

Where are the funnels found?

above the chemical clean up station (cabinet)

Forceps

precisely picks up small items

Where are the forceps found in the lab?

found above wash bottles and next to chemical clean up station (cabinet)

Crucible and cover

porcelain; used to heat small amounts of solid substances at high temperatures

Where is the crucible and cover found?

center cabinet above table 2

Striker

used to ignite/light items

Where are the strikers found?

in the storage closet

Eye wash station

used to clean your eyes of chemicals

Where is the eye wash station found?

found below the safety shower, to the right of the fume hood

Test tubes brush

bristles with wire handle; used to scrub small diameter glassware

Where are the test tube brushes found?

found in front of the teachers desk in the cart

Test tubes

glass, common sizes small (13 mm x 100 mm), medium (20 mm x 150 mm), large (25 mm x 200 mm), may be heated

Where are the test tubes found?

behind teachers desk in the cart BOTTOM THREE DRAWERS

Double buret clamp

Used to hold buret during titration

Where are the double buret clamps found?

in the storage closet?

Triple beam balance

also called platform balance; used to weigh

Where are the triple beam balances found?

above distilled water, next to mortar and pestle (cabinet)

pictogram for acutely toxic

pictogram for oxidizers

pictogram for gas under pressure

pictogram for burns skin, damages eyes, corrosive to metals

pictogram for explosive, self-reactive, organic peroxide

pictogram for acutely toxic, irritant to skin, eyes, or repiratory tract, skin sensitizer

pictogram for flammable, self-reactive, pyrophoric, self-heating, emits flammable gas, organic peroxide

Pictogram for carcinogen, mutagen, reproductive toxin, respiratory sensitizer, toxic to target organs, toxic if aspirated

Pictogram for toxic to aquatic life

What are the lab safety rule categories?

laboratory conduct, general work procedure, housekeeping, apparel in the lab, hygiene practices, emergency procedure. chemical handling

Do we pour acid into water or water into acid?

acid to water!!!

Are contact lenses allowed in the laboratory?

yes, but you must notify your teacher if you wear them.

How long do you stand under the safety shower?

15-20 minutes

How long do you use the eye wash for?

15-20 minutes

If you have contacts and are using the eyewash station, how long do you use it before taking the contacts out?

5 minutes, take out the contacts and then continue

What is the nurses extension?

4971

How do you use the fire blanket?

place it on a fire, do not throw it, gently place it.

How do you detect the odor of a chemical?

by wafting, using your hand to move the odor towards your nose

What are the necessary ppe in the lab?

gloves, goggles, apron

What are three methods of putting out a fire in the lab?

using the sand buckets, fire blanket, or the fire extinguisher

What type of fire extinguisher does our lab have?

ABC, used to extinguish ordary combustibles, flammable liquids, electrical fires

What does the PASS acronym stand for?

pull the pin, aim the nozzle at the base of the fire, squeeze the lever, and sweep

What part of your hand do you use to determine if glassware is hot?

back of the hand, hover over the sides of the glassware to feel the heat

What should you do if you have unused chemicals from a lab?

dispose of it in the appropriate waste container

What does RAMP stand for?

recognize hazards, assess risks, minimize risks, prepare for emergencies

Are hazards and risks the same thing?

no!

What are hazards?

any source of potential injury, damage, or harm

What are risks?

the likelihood you will be harmed by a hazard

How do we analyze risks?

use the four quadrant approach

Where are the gloves found?

In the corner of the room by the door.

Where should backpacks/other unnecessary materials go during a lab?

To the side/under desks or outside of the classroom.

Where are the bulbs and pipet pumps located?

In the drawers to the left of table two

Utility clamps

used to secure test tubes, distillation columns, and burets to the ringstand

What is the a material on older wire gauze?

asbestos

What is a pressed fiber pad?

4 x 4 inch square of ceramic fiber that provides a surface for hot beakers so the beaker doesnt come in contact with a cold countertop and shatter

Iron ring (ring clamp)

connect a ringstand and provide a stable, elevated platform for the reaction

Thermometer clamps

used to secure thermometers to the ringstand

Triangular file

used to primarily cut glass rod

Glass plate

provides a surface for micro scale experiments like drop reactions and testing of acids/bases

spatulas and scoopulas

used to dispense chemicals from their containers