Laboratory Equipment: Water Bath Description
A water bath is a device that maintains water at a constant temperature. It is used in the microbiological laboratory for incubations.
At the beginning of the lab period, you should check the water bath to see if it is turned on, set at the right temperature, and filled with water. Water baths should be filled with distilled water. If you are using the water bath for an experiment you should check the temperature frequently to make sure that the water bath is maintaining the proper temperature.
Water Bath Controls:
Temperature Control: All water baths have a control to set temperature. This control can be digital or a dial. Often there ...view middle of the document...
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Bunsen Burner Safety Guidelines
Bunsen burners present fire hazards. They produce an open flame and burn at a high temperature, and as a result, there is potential for an accident to occur. For the safety and convenience of everyone working in a laboratory, it is important that the following guidelines be observed. In case of a fire, activate the nearest fire alarm pull station, notify all lab personnel, and evacuate the building.
• Place the Bunsen burner away from any overhead shelving, equipment or light fixtures by at least 12 inches.
• Remove all papers, notebooks, combustible materials and excess chemicals from the area.
• Tie-back any long hair, dangling jewelry, or loose clothing.
• Inspect hose for cracks, holes, pinch points or any defect and ensure that the hose fits securely on the gas valve and the burner.
• Replace all hoses found to have a defect before using.
• Notify others in the laboratory that the burner will be in use.
• Utilize a sparker/lighter with extended nozzle to ignite the burner. Never use a match to ignite a burner.
• Have the sparker/lighter available before turning on the gas.