Laboratory Safety ProceduresPresented by: Manar Hassan

Outlines

• Health Hazards of Chemicals (Basic Toxicology, Routes of Entry…..).

• Toxic Effects of Chemical Exposure.

• Laser Safety in Lab.

• First Aid.

• Rules to be followed during work in Lab.

• The health effects of hazardous chemicals are often less clear than the physical hazards.

• RISK = TOXICITY x EXPOSURE The actual health risk of a chemical is a function of the toxicity and the actual

exposure. No matter how toxic the material may be, there is little risk involved unless it enters the body.

Routes of Entry• Skin and Eye Contact• Inhalation• Ingestion• Injection

Toxic Effects of Chemicals

• The toxic effects of a chemical may be local or systemic. Local injuries such as strong acids, alkalis or oxidizing agents.

Systemic injuries such as , methanol that has been ingested may cause blindness, while a significant skin exposure to nitrobenzene may effect the

central nervous system.

• Certain chemicals may affect a target organ. For example, lead primarily affects the central nervous system, kidney and red blood cells; isocyanates

may induce an allergic reaction (immune system); and chloroform may cause tumors in the liver and kidneys.

• Acute toxicity results from a single, short exposure. Effects usually appear quickly and are often reversible. Chronic toxicity results from repeated

exposure over a long period of time. Effects are usually delayed and gradual, and may be irreversible.

Lab Safety.htm Lab Safety Rules

Laboratory Safety Equipment

Laboratory Safety Equipment, Lab Safety Equipments Manufacturers, Laboratory Safety Products Suppliers, Safety Products in Laboratory.htm

•Lab Safety Posters

• Laser Safety

• Laser Safety

Be Laser Safe!

High-power lasers are in use in many research labs and are fundamental to making many of today's scientific

discoveries. Every employee should know the meaning of laser safety signs to prevent inadvertent injury from

entering a laser use area.

Danger! Very high-power lasers may be in use. Even momentary exposures may cause burns or permanent eye

damage. Do not enter unless authorized to do so.

Caution! High power lasers may be in use. Extended exposures may damage the eyes. Do not enter unless authorized to do so.

Notice! Laser installation, repair, set-up, or modification is in progress. Do not enter.  

• First Aid in Lab.

Science Lab Safety Rules

• Please don’t be that person.

Thanks for your Attention