Lab Tip #2: Stirring/Mixing techniques Always use a - TopicsExpress

Lab Tip #2: Stirring/Mixing techniques Always use a ‘policeman’ or similar device on stirring rods to prevent scratching of the inside of a vessel. When using a glass vessel with a magnetic stirrer always use a covered follower to prevent abrasion of the inside of the vessel. When using glass or metal mechanical stirrer in a glass vessel always predetermine the height of the stirrer before use to ensure there is no contact between the stirrer blade and the bottom or sides of the vessel. Never mix sulphuric acid and water inside a glass measuring cylinder. The heat of reaction can break the base of the cylinder

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