List all the possible places where losses may have occurred. Heating in the laboratory A laboratory also will have an array of heating, cooling and drying equipment such as gas burners, heating mantles, muffle furnaces, hot plates, steam baths, ovens, desiccators and refrigerators. Common gas burners include the bunsen, the meker, batswing and microburner. These burners all depend on a supply of fuel gas and air. The efficiency and heat output of any burner can be controlled by selecting the amount of air and/or gas which passes through the burner . Bunsen burner Batswing burner Meker burner Your teacher will demonstrate the correct ignition procedure for the common laboratory burners . Generally if you are going to leave a bunsen burner alight, but not in use, the yellow “safety” flame should be burning. Non-flame devices are versatile and much safer for use with flammable materials. These include electric hotplates, drying ovens, muffle furnaces, heating mantles and drying cabinets. Practical: 4.4 Heating devices Date Completed: ______________________ Teacher check ________________ Procedure: Analyst signature ____________ Examine the heating equipment on display and complete the following table. Device Description Major Use Safety Hazards Flame dependent devices (Burners)
List all the possible places where losses may have occurred. Heating in the laboratory A laboratory also will have an array of heating, cooling and drying equipment such as gas burners, heating mantles, muffle furnaces, hot plates, steam baths, ovens, desiccators and refrigerators. Common gas burners include the bunsen, the meker, batswing and microburner. These burners all depend on a supply of fuel gas and air. The efficiency and heat output of any burner can be controlled by selecting the amount of air and/or gas which passes through the burner . Bunsen burner Batswing burner Meker burner Your teacher will demonstrate the correct ignition procedure for the common laboratory burners . Generally if you are going to leave a bunsen burner alight, but not in use, the yellow “safety” flame should be burning. Non-flame devices are versatile and much safer for use with flammable materials. These include electric hotplates, drying ovens, muffle furnaces, heating mantles and drying cabinets. Practical: 4.4 Heating devices Date Completed: ______________________ Teacher check ________________ Procedure: Analyst signature ____________ Examine the heating equipment on display and complete the following table. Device Description Major Use Safety Hazards Flame dependent devices (Burners)