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[Chemical Knowledge]：How to use starch indicator correctly?

Read： 651 Time：8months ago Source：Transform the World with Simplicity

Starch indicator is an indicator commonly used in chemical experiments, which can be used to detect whether the solution contains starch. When using starch indicators, there are some precautions that need special attention to ensure the safety and accuracy of chemical experiments.

before using starch indicator, it is necessary to ensure its quality and storage conditions. The starch indicator should be stored in a dry, cool place, away from direct sunlight and high temperature. Before use, check the shelf life of the starch indicator, and the expired indicator should not be used.

should pay attention to the operation specification when carrying out chemical experiments. Before adding the starch indicator, the reagent should be shaken well to ensure that the solution is uniform. When adding starch indicator, it should be added slowly and fully stirred to avoid splashing or splashing. After the starch indicator is added, you need to wait for a while to ensure that the color is stable before proceeding to the next step.

starch indicator itself is a chemical agent, so you need to pay attention to personal safety during use. After contact with the starch indicator, wash your hands in time to avoid touching your mouth and eyes by mistake. If splashed on skin or clothing, rinse immediately with water and seek medical help.

in the use of starch indicator, but also need to pay attention to the exact use of the ratio. Different chemical experiments need to use different doses of starch indicators, excessive use or insufficient use will affect the accuracy of the experimental results. Therefore, when using the starch indicator, be sure to follow the experimental manual or the teacher's guidance to ensure that the amount used is sufficient and not excessive.

starch indicator plays an important role in chemical experiments, but it needs to pay attention to the operation standard and personal safety in the process of use. Only the correct use of starch indicator can ensure the accuracy and safety of chemical experiments. I hope everyone can take each reagent seriously when conducting chemical experiments to ensure the accuracy of the experimental results and their own safety.

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