Halon spray All kinds of fires —
¾ Splatter shields: Provide protection from splatter of
¾ Pipetting aids (teat or electromechanical devices).
Prevent from hazards arising out of mouth pipetting
¾ Goggles: Protect eyes from impacts and splashes
¾ Face shields: Protect the face from impacts and
Safety with Chemicals/Reagents
Excepting just a couple of reagents, almost all chemicals/
reagents used even in the most basic laboratory are lethal
poisons if consumed by anyone. Even if they are splashed
on the skin/eye, they can cause irreversible damage. There
is an appropriate way of handling and storage of hazardous
chemicals to avoid injury and damage to self and others.
In our country (and other tropical nations), excessive heat
can decompose many chemicals, cause explosions, or lead
to the formation of toxic fumes.
Labeling of Hazardous Reagents/Chemicals
At appropriate places, display the prohibition signs; and
on all dangerous reagents or chemicals, stick Hazard
warning symbols. In the following pages, important signs
and symbols as related to safety in the laboratory are given.
Fair number of common laboratory chemicals react
dangerously if they come in contact with specific chemicals.
Ensure that you keep such chemicals away from each other.
A few examples are listed below:
¾ Acetic acid with chromic acid, nitric acid, hydroxyl
compounds, ethylene glycol, peroxides and permanganates
¾ Chromic acid—with acetic acid, alcohol, glycerol and
¾ Sulfuric acid—with chlorates, perchlorates, permanganates and water.
¾ Acetone—with sulfuric acid and nitric acid
¾ Flammable liquids—with chromic acid, hydrogen
peroxide, nitric acid, ammonium nitrate and halogens.
¾ Alkali metals, e.g. calcium, potassium, sodium (these
form hydroxides on coming in contact with water) and
with other chlorinated hydrocarbons
¾ Chlorine—with ammonia, hydrogen, benzene and
¾ Copper—with azides, hydrogen peroxide and acetylene
¾ Cyanides—with all acids and alkalies
¾ Hydrogen peroxide—with copper, iron, chromium and
¾ Iodine—with acetylene and ammonia
¾ Sodium azide—with lead, copper and other metals.
These include ether, xylene, toluene, methanol, ethanol,
glacial acetic acid, acetic acid, acetone, acetic anhydride,
alcoholic Romanowsky stains and acid alcohol, etc.
These should be stored in a fire-proof metal box at ground
level, preferably in a cool store. A container well lined with
tin foil can also be used. Store only small quantities of such
Ensure that there is no open flame nearby while opening a
bottle containing flammable solvent. Nearest flame should
be at least 10 feet away. Never heat a flammable liquid over
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