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Lab safety rules, safety symbols and tools
This document provides information about lab safety rules, common safety symbols seen in laboratories, and descriptions of various laboratory tools and equipment. It lists 10 lab safety rules but does not specify them. It also describes safety symbols for substances that are explosive, flammable, corrosive, toxic, radioactive, pose environmental dangers, or are oxidizing, gases under pressure, or health hazards. Finally, it provides the names, uses, and simple diagrams of common lab tools including test tubes, beakers, conical flasks, Bunsen burners, tripods and gauzes, clamps and stands, funnels and filter paper, round-bottom and flat-bottom flasks, separating funnels, and delivery tubes.
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Lab safety rules, safety symbols and tools
- 1. LAB SAFETY RULES, SAFETYSYMBOLS AND LAB TOOLS EXPERIMENTAL SKILLS (PART 1)
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- 9. This symbol meansthat a substance is self-reactive and can explode if not handled correctly. Explosive Highly Flammable This symbol warns you that a chemical will catch fire easily.
- 10. Corrosive This symbol tellsyou that a chemical will attack your skin if you get it on you. Toxic This symbol means that a chemical is poisonous. Poisons can kill.
- 11. Radioactive This symbol meansemits radiation or which causes health hazards. Environmental danger This symbol means that if used wrongly, it could cause harm to the environment.
- 12. Oxidising Oxidising substances donot burn themselves, but they provide oxygen for flammable substances to burn. Gas pressure Pressurized gas, keep away from heat.
- 13. Health hazard Substance isirritant or hazardous. Irritant Dilute solutions of acids and alkalis are labelled with the 'irritant' symbol. Anyone using an irritant substance should take care to wash any spills off their skin immediately..
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- 15. When you performan investigation and then, afterwards, write down what happened; you may need to draw how the apparatus was arranged. To save time in science, there are special ways to draw the apparatus. In the next set of slides, you will know names of different apparatus, the use and 2D drawing of each apparatus.
- 18. TEST TUBE Used tohold, mix or heat small quantities of liquids or solids.
- 19. BEAKER simple container forstirring, mixing and heating liquids commonly used in many laboratories. Most also have a small spout (or "beak") to aid pouring.
- 20. CONICAL FLASK Used formixing, heating, cooling, dissolving, precipitation and boiling.
- 21. BUNSEN BURNER • Apparatusfor supplying heat • The gas used is methane which reacts with oxygen from air, forming carbon dioxide and water that escape as gases.
- 22. TRIPOD AND GAUZE tripod gauze Isused as a platform to hold and support glassware, such as beakers and flasks while heating in experiments .
- 23. CLAMP AND STAND stand clampHolds test tubes, Round bottom flasks for distillation experiments ,and other equipment such as burettes; which are most often used in titration experiments.
- 24. FUNNEL AND FILTERPAPER Funnel Filter paper used for separating solids from liquids via filtering, Using filter paper.
- 25. ROUND BOTTOM &FLAT BOTTOM FLASK Used for heating liquids. The design of the flat- bottomed flask allows it to stand alone on the lab bench. • Used for heating or boiling liquids. • Can’t stand alone on lab bench so should be used with clamp and stand. • More efficient heating than flat bottom flask.
- 26. SEPARATING FUNNEL Used toseparate liquids that don’t dissolve. Ex: oil and water
- 27. DELIVERY TUBE • Thedelivery tube converts any liquid or gas flowing through a Rubber tube into a free flow. • A rubber tube can be connected to or from the top of the tube.