Many biochemical investigations carried out in the laboratory involve the use of various components such as tonic bio-chemicals, inflammable gases, solvents and compressed gases. Potentially harmful biological samples, radio-isotopes, fragile glass ware, sharp objects and electrical equipment.

The term hazard means inherent potential of material used for experimentation that can cause damage to human health when handled improperly. A high hazard does not imply a high risk while a low hazard does not mean a low risk.

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