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Types of glass used in laboratory: 1) Borosilicate glass is transparent and can withstand thermal stress. 2) Quartz glass can withstand very high temperatures and is transparent in certain parts of the electromagnetic spectrum. 3) Darkened brown or Amber (actinic) glass can block ultraviolet and infrared radiation.

According to different application, there are 8 classifications of chemistry lab equipments: 1) Measuring type. 2) Reaction type. 3) Vessel type. 4) Separation type. 5) Solid clamp type. 6) Heating type. 7) Matching type.

The common heating devices used in labs are bunsen burners, hot air ovens, hot plates, heating mantles, muffle furnaces, hot oil baths and microwave digestion systems.

Second-degree burns (partial thickness burns) affect the epidermis and the dermis (lower layer of skin). They cause pain, redness, swelling, and blistering. Third-degree burns (full thickness burns) go through the dermis and affect deeper tissues. They result in white or blackened, charred skin that may be numb.

Common laboratory balances and scales types are ultra-micro, micro, semi-micro, analytical, and precision balances. The readability of a balance is the smallest difference between two measured values that can be read on the display.

Common laboratory apparatus are: 1) Microscope. 2) Test tube. 3) Watch glass. 4) Crucible. 5) Volumetric flasks. 6) Beakers. 7) Bunsen burner. 8) Spatula.